For words that have only 3 letters, there's no 4th letter. As an example with the word “insert”, there won't be any a lot more letters afterwards and thus needs to be the word "incorporate". The word “addict” is inside the BIP39 wordlist however you would have employed “addi” for https://bookmarklinking.com/story4972774/helping-the-others-realize-the-advantages-of-bip39-seed-phrase-mnemonics-generator