Dictionary of Spoken Russian/Russian-English/Section 20

§20. КТО, ЧТО

The interrogative pronouns [k-] "who" and [č-] "what" have an ending [-to] in the n forms; before this [č] is replaced by [š], but written ч. The i ending has [e] instead of [i]. There are no distinctions of gender or number:

n	кто	что [što]
a	кого	что
g	кого	чего
d	кому	чему
i	кем	чем
l	ком	чём

For compounds of these words see §23.