YOU SAID:

to commit suicide a person must hang themselves

INTO JAPANESE

自殺するには人は首を吊るさなければなりません

BACK INTO ENGLISH

A person must hang his neck to commit suicide

INTO JAPANESE

人は自殺するために首を吊るさなければなりません

BACK INTO ENGLISH

One has to hang his neck to commit suicide

INTO JAPANESE

自殺するには首を吊るす必要があります

BACK INTO ENGLISH

You need to hang your neck to commit suicide

INTO JAPANESE

自殺するには首を吊るす必要があります

BACK INTO ENGLISH

You need to hang your neck to commit suicide