For words that have only three letters, there isn't any 4th letter. One example is with the word “insert”, there won't be any far more letters afterwards and thus must be the word "incorporate". The word “addict” is while in the BIP39 wordlist however you might have employed “addi” for https://bookmarksbay.com/story19091658/helping-the-others-realize-the-advantages-of-bip39-mnemonic-phrase-tool