For words that have only 3 letters, there is absolutely no 4th letter. For instance with the word “incorporate”, there aren't any a lot more letters Later on and so has to be the word "incorporate". The word “addict” is in the BIP39 wordlist however you would've utilized “addi” for https://trackbookmark.com/story20278332/the-5-second-trick-for-ledger-seed-phrase-bip39