YOU SAID:
My mother is the lovliest person I know
INTO JAPANESE
私の母は私が知っている lovliest 人です。
BACK INTO ENGLISH
My mother is the lovliest people I know.
INTO JAPANESE
私の母は、私は知っている lovliest 人です。
BACK INTO ENGLISH
My mother is the lovliest people know I.
INTO JAPANESE
私の母は lovliest の人々 は、私を知っています。
BACK INTO ENGLISH
My mother is the lovliest people know me.
INTO JAPANESE
私の母は lovliest の人々 が私を知っています。
BACK INTO ENGLISH
My mother is the lovliest people know me.
You've done this before, haven't you.