Where does “vettünk” come from?

vettünk (Hungarian) comes from Hungarian -tünk, from Hungarian -t, from Proto-Uralic -tt.

Ancestry of “vettünk”, step by step

Step	Language	Word	Meaning
1	Hungarian	-tünk	Used to form the first-person plural past tense...
2	Hungarian	-t	Used to form the accusative case; -ed, -t. Used...
3	Proto-Uralic	-tt	—