For words that have only 3 letters, there isn't any 4th letter. For example with the word “insert”, there isn't any a lot more letters Later on and thus has to be the word "include". The word “addict” is inside the BIP39 wordlist however you would have employed “addi” for https://thesocialroi.com/story8569689/the-invalid-bip39-phrase-diaries