4.5.2. Fourth Declension in Examples

1. Nominative Singular Animate in -os; as in wlqos

2. Accusative Singular Animate in -om; as in wlqom

3. Vocative Singular Animate in -e; as in wlqe

5. The Nom.-Acc.-Voc. Singular Inanimate in -om; as in jugom, newom

4. Genitive Singular in -os, -osio, -e/oso, or -i; as in wlqosio / wlqeso / wlqi,

NOTE. The original form -os is rare, as the Genitive has to be distinguished from the Nominative. This disambiguation happens, as already said, by alternatively lengthening the ending or changing it altogether. This Declension is probably recent in IE III - even though it happened already in IE II - and that's why it is homogeneous, without variations in vocalism nor in accent; the major problem is the distinction between Genitive and Nominative.

6. Oblique Singular in -oi, -oi, -o : wlqoi, newoi

 SINGULAR