YOU SAID:

when i was 12 years old i ate a safety pin

INTO JAPANESE

12 歳の頃、私は安全ピンを食べた

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When I was 12 years old, I had a safety pin

INTO JAPANESE

私は安全ピンを持っていた 12 歳の頃、

BACK INTO ENGLISH

I when I was a 12-year-old had a safety pin

INTO JAPANESE

12 歳のとき私は安全ピンを持っていた

BACK INTO ENGLISH

When the 12-year-old had a safety pin I

INTO JAPANESE

12 歳が安全ピンを持っていた私

BACK INTO ENGLISH

My 12-year-old had a safety pin

INTO JAPANESE

私の 12 歳は、安全ピンを持っていた

BACK INTO ENGLISH

My 12-year-old had a safety pin