Where does “*ikire” come from?

*ikire (Proto-Mongolic) comes from Proto-Turkic *ẹk(k)iŕ, from Proto-Turkic ẹk(k)i — two.

Ancestry of “*ikire”, step by step

Step	Language	Word	Meaning
1	Proto-Turkic	*ẹk(k)iŕ	twin
2	Proto-Turkic	ẹk(k)i	two

Words derived from “*ikire”

ихэр

Every word from Proto-Turkic ẹk(k)i →Every word from Proto-Turkic *ẹk(k)iŕ →