YOU SAID:

The alphabet is nonexistent in my mind

INTO JAPANESE

私の頭の中にアルファベットは存在しない

BACK INTO ENGLISH

The alphabet doesn't exist in my head

INTO JAPANESE

頭の中にアルファベットが存在しない

BACK INTO ENGLISH

There are no alphabets in my head

INTO JAPANESE

私の頭の中にアルファベットはない

BACK INTO ENGLISH

There's no alphabet in my head

INTO JAPANESE

頭の中にアルファベットがない

BACK INTO ENGLISH

I don't have the alphabet in my head

INTO JAPANESE

頭の中にアルファベットが無い

BACK INTO ENGLISH

I don't have the alphabet in my head