Where does “fejtettük” come from?

fejtettük (Hungarian) comes from Hungarian -ettük, from Hungarian -et, from Hungarian -é-, from Hungarian -d, from Middle Welsh -nt — 3rd person plural verb ending.

Ancestry of “fejtettük”, step by step

Step	Language	Word	Meaning
1	Hungarian	-ettük	Used to form the first-person plural past tense...
2	Hungarian	-et	Added to a verb to form a verb with a meaning of...
3	Hungarian	-é-	—
4	Hungarian	-d	your; Used in the second-person singular definite...
5	Middle Welsh	-nt	3rd person plural verb ending

Every word from Middle Welsh -nt →Every word from Hungarian -et →Every word from Hungarian -d →