This is a continuation of the last post, where masculine and feminine i stem nouns in the third declension have two consonants before -is.

N : –ēs

G : –ium

D : –ibus

Acc : –ēs or –īs

Abl : –ibus

The plural endings for the Latin word for part or piece:

N : partēs

G : partium

D : partribus

Acc : partēs

Abl : partibus