YOU SAID:

I am your father's brother cousin's nephew's former roommate.

INTO JAPANESE

私はあなたの父の兄弟のいとこの甥の前のルームメイトです。

BACK INTO ENGLISH

I am a roommate in front of your father's brother's cousin's nephew.

INTO JAPANESE

私はあなたの父親の兄弟のいとこの甥の前のルームメイトです。

BACK INTO ENGLISH

I am a roommate in front of my father's brother's cousin's nephew.

INTO JAPANESE

私は父の兄弟のいとこの甥の前のルームメイトです。

BACK INTO ENGLISH

I am a roommate in front of my father's brother's cousin's nephew.