Where does “tongʰ-éye-ti” come from?

tongʰ-éye-ti (Proto-Indo-European) comes from Proto-Indo-European -éyeti, from Proto-Indo-European -yeti — Creates transitive imperfective verbs from roots.

Ancestry of “tongʰ-éye-ti”, step by step

Step	Language	Word	Meaning
1	Proto-Indo-European	-éyeti	Forms causative imperfective verbs from roots;...
2	Proto-Indo-European	-yeti	Creates transitive imperfective verbs from roots

Every word from Proto-Indo-European -yeti →Every word from Proto-Indo-European -éyeti →