22. interrogative pronoun "which one" (katamad, n.):
 
  Sg. Du. Pl.
Nom. katamat katame katamani
Acc. katamat katame katamani
Ins. katamena katamabhyam katamaih
Dat. katamasmai katamabhyam katamebhyah
Abl. katamasmat katamabhyam katamebhyah
Gen. katamasya katamayoh katamesam
Loc. katamasmin katamayoh katamesu
Voc. katamat katame katamani