1. Verbs of the Fourth Conjugation end in -e, -a, and are always athematic.
2. The Present is athematic, while the Imperfect is thematic in -s-.
Verb: klusina [from kleu, hear], listen
| 
           Present Stem  | 
        
           Imperfect Stem  | 
        
           Perfect Stem  | 
        
           Future Stem  | 
      
| 
           klusina-  | 
        
           klusinate/o-  | 
        
           (ke)klosina-  | 
        
           klesinas-  | 
      
3. The Present is formed with the Present stem and primary endings. The Subjunctive, with lengthened vowel, also thematic.
| 
           
  | 
        
           
  | 
        
           Indicative  | 
        
           Subjunctive  | 
        
           Optative  | 
      
| 
           
  | 
        
           
  | 
        
           Present  | 
      ||
| 
           Sg.  | 
        
           1.  | 
        
           klusinami  | 
        
           klusinaem  | 
        
           klusinaiem  | 
      
| 
           2.  | 
        
           klusinasi  | 
        
           klusinaes  | 
        
           klusinaies  | 
      |
| 
           3.  | 
        
           klusinati  | 
        
           klusinaet  | 
        
           klusinaiet  | 
      |
| 
           Pl.  | 
        
           1.  | 
        
           klusinames  | 
        
           klusinaomo  | 
        
           klusinaime  | 
      
| 
           2.  | 
        
           klusinathe  | 
        
           klusinaete  | 
        
           klusinaite  | 
      |
| 
           3.  | 
        
           klusinanti  | 
        
           klusinaont  | 
        
           klusinaint  | 
      |
4. The Imperfect is formed with the Imperfect stem (i.e., thematic in -t) and secondary endings, with accent on the theme vowel. When the Indicative is thematic, the Subjunctive has a lengthened theme vowel.
| 
           
  | 
        
           
  | 
        
           Imperfect  | 
      ||
| 
           Sg.  | 
        
           1.  | 
        
           klusinatom  | 
        
           klusinatom  | 
        
           klusinatoim  | 
      
| 
           2.  | 
        
           klusinates  | 
        
           klusinates  | 
        
           klusinatois  | 
      |
| 
           3.  | 
        
           klusinatet  | 
        
           klusinatet  | 
        
           klusinatoit  | 
      |
| 
           Pl.  | 
        
           1.  | 
        
           klusinatomo  | 
        
           klusinatomo  | 
        
           klusinatoime  | 
      
| 
           2.  | 
        
           klusinatete  | 
        
           klusinatete  | 
        
           klusinatoite  | 
      |
| 
           3.  | 
        
           klusinatont  | 
        
           klusinatont  | 
        
           klusinatoient  | 
      |
5. The Perfect is made with root vowel in o/Ø, and Perfect endings. The Subjunctive, thematic, with secondary endings.
| 
           
  | 
        
           
  | 
        
           Perfect  | 
      ||
| 
           Sg.  | 
        
           1.  | 
        
           klosina*  | 
        
           klosinaom  | 
        
           klosinaiem  | 
      
| 
           2.  | 
        
           klosinatha  | 
        
           klosinaes  | 
        
           klosinaies  | 
      |
| 
           3.  | 
        
           klosinae  | 
        
           klosinaet  | 
        
           klosinaiet  | 
      |
| 
           Pl.  | 
        
           1.  | 
        
           klsiname  | 
        
           klsinaomo  | 
        
           klsinaime  | 
      
| 
           2.  | 
        
           klsinate  | 
        
           klsinaete  | 
        
           klsinaite  | 
      |
| 
           3.  | 
        
           klsinaer  | 
        
           klsinaont  | 
        
           klsinaint  | 
      |
Note. The form klosina is a contracted form of *klosinaa. Otherwise, it could be confused with an added schwa sound (also written a), which wouldn't be contracted.
6. The Past Perfect is obtained with the Perfect stem, adding secondary desinences. The Subjunctive, thematic and secondary endings.
| 
           
  | 
        
           
  | 
        
           Past Perfect  | 
      ||
| 
           Sg.  | 
        
           1.  | 
        
           klosinam  | 
        
           klosinaom  | 
        
           klosinaiem  | 
      
| 
           2.  | 
        
           klosinas  | 
        
           klosinaes  | 
        
           klosinaies  | 
      |
| 
           3.  | 
        
           klosinat  | 
        
           klosinaet  | 
        
           klosinaiet  | 
      |
| 
           Pl.  | 
        
           1.  | 
        
           klsiname  | 
        
           klsinaomo  | 
        
           klsinaime  | 
      
| 
           2.  | 
        
           klsinate  | 
        
           klsinaete  | 
        
           klsinaite  | 
      |
| 
           3.  | 
        
           klsinant  | 
        
           klsinaont  | 
        
           klsinaint  | 
      |
7. The Future is formed usually with root vowel e and an -s- addition, and primary endings. It is athematic, as the Present.
| 
           
  | 
        
           
  | 
        
           Future  | 
      ||
| 
           Sg.  | 
        
           1.  | 
        
           klesinasmi  | 
        
           klesinasom  | 
        
           klesinasiem  | 
      
| 
           2.  | 
        
           klesinassi  | 
        
           klesinases  | 
        
           klesinasies  | 
      |
| 
           3.  | 
        
           klesinasti  | 
        
           klesinaset  | 
        
           klesinasiet  | 
      |
| 
           Pl.  | 
        
           1.  | 
        
           klesinasmes  | 
        
           klesinasomo  | 
        
           klesinasime  | 
      
| 
           2.  | 
        
           klesinasthe  | 
        
           klesinasete  | 
        
           klesinasite  | 
      |
| 
           3.  | 
        
           klesinasenti  | 
        
           klesinasont  | 
        
           klesinasint  | 
      |
8. The Conditional is formed with the Future stem and secondary endings.
| 
           
  | 
        
           
  | 
        
           Conditional  | 
      ||
| 
           Sg.  | 
        
           1.  | 
        
           klesinasm  | 
        
           klesinasom  | 
        
           klesinasiem  | 
      
| 
           2.  | 
        
           klesinass  | 
        
           klesinases  | 
        
           klesinasies  | 
      |
| 
           3.  | 
        
           klesinast  | 
        
           klesinaset  | 
        
           klesinasiet  | 
      |
| 
           Pl.  | 
        
           1.  | 
        
           klesinasme  | 
        
           klesinasomo  | 
        
           klesinasime  | 
      
| 
           2.  | 
        
           klesinaste  | 
        
           klesinasete  | 
        
           klesinasite  | 
      |
| 
           3.  | 
        
           klesinasent  | 
        
           klesinasont  | 
        
           klesinasint  | 
      |
The Middle Voice Paradigm is as follows:
9. The Present Middle is formed with the Present stem and Middle primary endings.
| 
           
  | 
        
           
  | 
        
           Indicative  | 
        
           Subjunctive  | 
        
           Optative  | 
      
| 
           
  | 
        
           
  | 
        
           Present Middle  | 
      ||
| 
           Sg.  | 
        
           1.  | 
        
           klusinamai  | 
        
           klusinaoma  | 
        
           klusinaiema  | 
      
| 
           2.  | 
        
           klusinasoi  | 
        
           klusinaeso  | 
        
           klusinaieso  | 
      |
| 
           3.  | 
        
           klusinatoi  | 
        
           klusinaeto  | 
        
           klusinaieto  | 
      |
| 
           Pl.  | 
        
           1.  | 
        
           klusinamesdha  | 
        
           klusinaomedha  | 
        
           klusinaimedha  | 
      
| 
           2.  | 
        
           klusinadhe  | 
        
           klusinaodhue  | 
        
           klusinaidhue  | 
      |
| 
           3.  | 
        
           klusinantoi  | 
        
           klusinaonto  | 
        
           klusinainto  | 
      |
10. The Imperfect Middle is made with the Imperfect stem and Middle secondary endings, with accent on the theme vowel. The Subjunctive has lengthened vowel and is also thematic.
| 
           
  | 
        
           
  | 
        
           Imperfect Middle  | 
      ||
| 
           Sg.  | 
        
           1.  | 
        
           klusinatoma  | 
        
           klusinatoma  | 
        
           klusinatoima  | 
      
| 
           2.  | 
        
           klusinateso  | 
        
           klusinateso  | 
        
           klusinatoiso  | 
      |
| 
           3.  | 
        
           klusinateto  | 
        
           klusinateto  | 
        
           klusinatoito  | 
      |
| 
           Pl.  | 
        
           1.  | 
        
           klusinatomedha  | 
        
           klusinatomedha  | 
        
           klusinatoimedha  | 
      
| 
           2.  | 
        
           klusinatedhue  | 
        
           klusinatedhue  | 
        
           klusinatoidhue  | 
      |
| 
           3.  | 
        
           klusinatonto  | 
        
           klusinatonto  | 
        
           klusinatoiento  | 
      |
11. The Perfect Middle is formed with root vowel Ø and Middle secondary endings.
| 
           
  | 
        
           
  | 
        
           Perfect Middle  | 
      ||
| 
           Sg.  | 
        
           1.  | 
        
           klsinama  | 
        
           klsinaoma  | 
        
           klsinaiema  | 
      
| 
           2.  | 
        
           klsinaso  | 
        
           klsinaeso  | 
        
           klsinaieso  | 
      |
| 
           3.  | 
        
           klsinato  | 
        
           klsinaeto  | 
        
           klsinaieto  | 
      |
| 
           Pl.  | 
        
           1.  | 
        
           klsinamedha  | 
        
           klsinaomedha  | 
        
           klsinaimedha  | 
      
| 
           2.  | 
        
           klsinadhue  | 
        
           klsinaedhue  | 
        
           klsinaidhue  | 
      |
| 
           3.  | 
        
           klsinanto  | 
        
           klsinaonto  | 
        
           klsinainto  | 
      |
12. The Past Perfect Middle is obtained with the Perfect stem and Middle secondary endings.
| 
           
  | 
        
           
  | 
        
           Past Perfect Middle  | 
      ||
| 
           Sg.  | 
        
           1.  | 
        
           klosinama  | 
        
           klosinaoma  | 
        
           klosinaiema  | 
      
| 
           2.  | 
        
           klosinaso  | 
        
           klosinaeso  | 
        
           klosinaieso  | 
      |
| 
           3.  | 
        
           klosinato  | 
        
           klosinaeto  | 
        
           klosinaieto  | 
      |
| 
           Pl.  | 
        
           1.  | 
        
           klsinamedha  | 
        
           klsinaomedha  | 
        
           klsinaimedha  | 
      
| 
           2.  | 
        
           klsinadhue  | 
        
           klsinaedhue  | 
        
           klsinaidhue  | 
      |
| 
           3.  | 
        
           klsinanto  | 
        
           klsinaonto  | 
        
           klsinainto  | 
      |
13. The Future Middle is formed with the Future stem and primary endings.
| 
           
  | 
        
           
  | 
        
           Future Middle  | 
      ||
| 
           Sg.  | 
        
           1.  | 
        
           klesinasmai  | 
        
           klesinasoma  | 
        
           klesinasiema  | 
      
| 
           2.  | 
        
           klesinassoi  | 
        
           klesinaseso  | 
        
           klesinasieso  | 
      |
| 
           3.  | 
        
           klesinastoi  | 
        
           klesinaseto  | 
        
           klesinasieto  | 
      |
| 
           Pl.  | 
        
           1.  | 
        
           klesinasmesdha  | 
        
           klesinasomedha  | 
        
           klesinasimedha  | 
      
| 
           2.  | 
        
           klesinasdhe  | 
        
           klesinasedhue  | 
        
           klesinasidhue  | 
      |
| 
           3.  | 
        
           klesinasentoi  | 
        
           klesinasonto  | 
        
           klesinasinto  | 
      |
14. The Conditional Middle is made with the Future stem and secondary endings.
| 
           
  | 
        
           
  | 
        
           Conditional Middle  | 
      ||
| 
           Sg.  | 
        
           1.  | 
        
           klesinasma  | 
        
           klesinasoma  | 
        
           klesinasiema  | 
      
| 
           2.  | 
        
           klesinasso  | 
        
           klesinaseso  | 
        
           klesinasieso  | 
      |
| 
           3.  | 
        
           klesinasto  | 
        
           klesinaseto  | 
        
           klesinasieto  | 
      |
| 
           Pl.  | 
        
           1.  | 
        
           klesinasmedha  | 
        
           klesinasomedha  | 
        
           klesinasimedha  | 
      
| 
           2.  | 
        
           klesinasdhue  | 
        
           klesinasedhue  | 
        
           klesinasidhue  | 
      |
| 
           3.  | 
        
           klesinasento  | 
        
           klesinasonto  | 
        
           klesinasinto  | 
      |
15. The Passive Voice is obtained from the Middle forms with Passive endings:
| 
           
  | 
        
           
  | 
        
           Indicative  | 
        
           Subjunctive  | 
        
           Optative  | 
      
| 
           
  | 
        
           
  | 
        
           Present Passive  | 
      ||
| 
           Sg.  | 
        
           1.  | 
        
           klusinamar  | 
        
           klusinaomar  | 
        
           klusinaiemar  | 
      
| 
           2.  | 
        
           klusinasor  | 
        
           klusinaesor  | 
        
           klusinaiesor  | 
      |
| 
           3.  | 
        
           klusinator  | 
        
           klusinaetor  | 
        
           klusinaieto  | 
      |
| 
           Pl.  | 
        
           1.  | 
        
           klusinamor  | 
        
           klusinaomor  | 
        
           klusinaimor  | 
      
| 
           2.  | 
        
           klusinadhuer  | 
        
           klusinaodhuer  | 
        
           klusinaidhuer  | 
      |
| 
           3.  | 
        
           klusinantor  | 
        
           klusinaontor  | 
        
           klusinaintor  | 
      |
| 
           
  | 
        
           
  | 
        
           Imperfect Passive  | 
      ||
| 
           Sg.  | 
        
           1.  | 
        
           klusinatomar  | 
        
           klusinatomar  | 
        
           klusinatoimar  | 
      
| 
           2.  | 
        
           klusinatesor  | 
        
           klusinatesor  | 
        
           klusinatoisor  | 
      |
| 
           3.  | 
        
           klusinatetor  | 
        
           klusinatetor  | 
        
           klusinatoitor  | 
      |
| 
           Pl.  | 
        
           1.  | 
        
           klusinatomor  | 
        
           klusinatomor  | 
        
           klusinatoimor  | 
      
| 
           2.  | 
        
           klusinatedhuer  | 
        
           klusinatedhuer  | 
        
           klusinatoidhuer  | 
      |
| 
           3.  | 
        
           klusinatontor  | 
        
           klusinatontor  | 
        
           klusinatoientor  | 
      |
| 
           
  | 
        
           
  | 
        
           Perfect Passive  | 
      ||
| 
           Sg.  | 
        
           1.  | 
        
           klsinamar  | 
        
           klsinaomar  | 
        
           klsinaiemar  | 
      
| 
           2.  | 
        
           klsinasor  | 
        
           klsinaesor  | 
        
           klsinaiesor  | 
      |
| 
           3.  | 
        
           klsinator  | 
        
           klsinaetor  | 
        
           klsinaietor  | 
      |
| 
           Pl.  | 
        
           1.  | 
        
           klsinamor  | 
        
           klsinaomor  | 
        
           klsinaimor  | 
      
| 
           2.  | 
        
           klsinadhuer  | 
        
           klsinaedhuer  | 
        
           klsinaidhuer  | 
      |
| 
           3.  | 
        
           klsinantor  | 
        
           klsinaontor  | 
        
           klsinaintor  | 
      |
| 
           
  | 
        
           
  | 
        
           Past Perfect Passive  | 
      ||
| 
           Sg.  | 
        
           1.  | 
        
           klosinamar  | 
        
           klosinaomar  | 
        
           klosinaiemar  | 
      
| 
           2.  | 
        
           klosinasor  | 
        
           klosinaesor  | 
        
           klosinaiesor  | 
      |
| 
           3.  | 
        
           klosinator  | 
        
           klosinaetor  | 
        
           klosinaietor  | 
      |
| 
           Pl.  | 
        
           1.  | 
        
           klsinamor  | 
        
           klsinaomor  | 
        
           klsinaimor  | 
      
| 
           2.  | 
        
           klsinadhuer  | 
        
           klsinaedhuer  | 
        
           klsinaidhuer  | 
      |
| 
           3.  | 
        
           klsinantor  | 
        
           klsinaontor  | 
        
           klsinaintor  | 
      |
| 
           
  | 
        
           
  | 
        
           Future Passive  | 
      ||
| 
           Sg.  | 
        
           1.  | 
        
           klesinasmar  | 
        
           klesinasomar  | 
        
           klesinasiemar  | 
      
| 
           2.  | 
        
           klesinassor  | 
        
           klesinasesor  | 
        
           klesinasiesor  | 
      |
| 
           3.  | 
        
           klesinastor  | 
        
           klesinasetor  | 
        
           klesinasietor  | 
      |
| 
           Pl.  | 
        
           1.  | 
        
           klesinasmor  | 
        
           klesinasomor  | 
        
           klesinasimor  | 
      
| 
           2.  | 
        
           klesinasdhuer  | 
        
           klesinasedhuer  | 
        
           klesinasidhuer  | 
      |
| 
           3.  | 
        
           klesinasentor  | 
        
           klesinasontor  | 
        
           klesinasintor  | 
      |
| 
           
  | 
        
           
  | 
        
           Conditional Passive  | 
      ||
| 
           Sg.  | 
        
           1.  | 
        
           klesinasmar  | 
        
           klesinasomar  | 
        
           klesinasiemar  | 
      
| 
           2.  | 
        
           klesinassor  | 
        
           klesinasesor  | 
        
           klesinasiesor  | 
      |
| 
           3.  | 
        
           klesinastor  | 
        
           klesinasetor  | 
        
           klesinasietor  | 
      |
| 
           Pl.  | 
        
           1.  | 
        
           klesinasmor  | 
        
           klesinasomor  | 
        
           klesinasimor  | 
      
| 
           2.  | 
        
           klesinasdhuer  | 
        
           klesinasedhuer  | 
        
           klesinasidhuer  | 
      |
| 
           3.  | 
        
           klesinasentor  | 
        
           klesinasontor  | 
        
           klesinasintor  | 
      |
16. The Imperative is formed as follows:
| 
           
  | 
        
           
  | 
        
           Imperative  | 
      
| 
           SING.  | 
        
           2.  | 
        
           klusina  | 
      
| 
           
  | 
        
           3.  | 
        
           klusinatod  | 
      
| 
           PLUR.  | 
        
           2.  | 
        
           klusinate  | 
      
| 
           
  | 
        
           3.  | 
        
           klusinatod  | 
      
16. Other possible forms are:
| 
           
  | 
        
           Europaio  | 
        
           English  | 
      
| 
           Infinitive  | 
        
           klusina  | 
        
           to listen  | 
      
| 
           Verbal Noun  | 
        
           klusina-  | 
        
           the listening  | 
      
| 
           Present Participle  | 
        
           klusinant  | 
        
           who listens, who listened, listening  | 
      
| 
           Perfect Participle  | 
        
           klusinaues  | 
        
           listened  | 
      
| 
           Middle Participle  | 
        
           klusinamno-  | 
        
           who listens to himself  | 
      
| 
           Passive Participle  | 
        
           klusinato-  | 
        
           (been) listened  | 
      
| 
           Gerundive  | 
        
           klusinalo-  | 
        
           who has to be listened  | 
      
| 
           Absolutive/Gerund  | 
        
           klusinalo  | 
        
           of listening, to the listening,...  |