For words that only have 3 letters, there isn't any 4th letter. One example is with the word “incorporate”, there aren't any a lot more letters afterwards and thus must be the word "include". The word “addict” is in the BIP39 wordlist however you would've utilised “addi” for “addict”. Keep https://hubwebsites.com/story20355117/the-5-second-trick-for-ledger-seed-phrase-bip39