Neuter stems ending in -an (paradigm kamman-, action):

  Sg. Pl.
Nom. kamma kammani
Acc. kamma kammani
Gen. kammuno kammanaj
Dat. kammuno kammanaj
Ins. kammuna/kammana kammehi/kammebhi
Abl. kammuna/kammana kammehi/kammebhi
Loc. kammani kammesu