Mutlu-y-duk is actually

Mutlu + idik: mutlu ends with a consanant and idik start with a consanant.

but it becomes

mutlu-y-duk (note that the infusion letter “y” goes in the middle and “idik” becomes “duk” to comply with the vowel harmony)

Selamlar,

Yasemin

hissettim– I felt

inandın –you believed

mutluduk– we was happy<–i believe it should have been mutluyduk… i’ll try to find an explanation for that

oynadın — we played<– YOU played

öptüm– I kissed

aldık — we bought

well done!

tuttun– you hold

uçtum — I flew

sevdin– you loved

buldular– they found

yardım ettim– I helped

uyudun– you slept

yürüdük– we walked

correct me if I am wrong,