YOU SAID:
i forget my locker combination
INTO JAPANESE
私のロッカーの組み合わせ数字を忘れる
BACK INTO ENGLISH
Forget the combination to my locker
INTO JAPANESE
私のロッカーの組み合わせを忘れた
BACK INTO ENGLISH
I forgot my locker combination
INTO JAPANESE
私のロッカーの組み合わせを忘れてしまった
BACK INTO ENGLISH
I forgot my locker combination
That didn't even make that much sense in English.