Before revision: That is, the letter “b” ] of the written word expression “bat” distinguishes it from the word “sat,” but neither “b” nor “s” contributes to the meaning content of these words [ .
After revision: That is, the sound ] of the written word expression “bat” , distinguishes "bat" from the word “sat,” but neither bb, designated by grapheme <b>norsbear meaning on their own [ .