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

  Sg. Pl.
Nom. kamma kammāni
Acc. kamma kammāni
Gen. kammuno kammānaṃ
Dat. kammuno kammānaṃ
Ins. kammunā/kammanā kammehi/kammebhi
Abl. kammunā/kammanā kammehi/kammebhi
Loc. kammani kammesu