For words that have only three letters, there isn't any 4th letter. By way of example with the word “include”, there isn't any a lot more letters Later on and so needs to be the word "incorporate". The word “addict” is during the BIP39 wordlist however you would've utilized “addi” https://meshbookmarks.com/story18906635/the-ultimate-guide-to-bip39-seed-phrase-mnemonics-generator