For words that only have three letters, there's no 4th letter. Such as with the word “insert”, there aren't any much more letters afterwards and thus has to be the word "incorporate". The word “addict” is inside the BIP39 wordlist but you might have used “addi” for “addict”. gravity trophy https://ticketsbookmarks.com/story18722243/bip39-seed-phrase-fundamentals-explained