For words that have only 3 letters, there is absolutely no 4th letter. One example is with the word “incorporate”, there isn't any far more letters Later on and thus should be the word "include". The word “addict” is in the BIP39 wordlist however, you might have utilised “addi” for https://atozbookmarkc.com/story19037775/bip39-seed-phrase-mnemonics-generator-an-overview