1. Its inflection is similar to that of -i, -u, but they have no alternating vowels before the declension, and the -i and -u are substituted before vowel by -ij, -uw.
2. They are always feminine, and they cannot be inanimates nor adjectives.
3. These themes are most of the times roots.
4. Examples of this are:
SINGULAR
| 
 
  | 
 f. bru  | 
 f. dnghu  | 
| 
 NOM.  | 
 bru-s  | 
 dnghu-s  | 
| 
 ACC.  | 
 bru-m  | 
 dnghu-m  | 
| 
 VOC.  | 
 bru  | 
 dnghu  | 
| 
 GEN.  | 
 bruw-es  | 
 dnghuw-os  | 
| 
 OBL.  | 
 bruw-ei / bruw-i  | 
 dnghuw-ou  |