Where does “-likana” come from?

-likana (Swahili) comes from Swahili -ana, from Proto-Bantu -ana.

Ancestry of “-likana”, step by step

Step	Language	Word	Meaning
1	Swahili	-ana	each other; [[Appendix:Swahili verbal derivation#Reciprocal
2	Proto-Bantu	-ana	—