15. pronoun "which one " (katama-, m.):
| Sg. | Pl. | |
| Nom. | katamo | katame |
| Acc. | katamaṃ | katame |
| Gen. | katamassa | katamesaṃ/katamesānaṃ |
| Dat. | katamassa | katamesaṃ/katamesānaṃ |
| Ins. | katamena | katamehi/katamebhi |
| Abl. | katamamhā/katamasmā | katamehi/katamebhi |
| Loc. | katamamhi/katamasmiṃ | katamesu |