YOU SAID:

I built ten forts while my parents drank beer

INTO JAPANESE

私の両親は、ビールを飲みながら 10 砦を建てられました。

BACK INTO ENGLISH

My parents were built 10 Fort while drinking beer.

INTO JAPANESE

私の両親は、ビールを飲みながら 10 フォートを建設されました。

BACK INTO ENGLISH

My parents were built 10 Fort while drinking beer.