For words that only have three letters, there's no 4th letter. Such as with the word “incorporate”, there isn't any a lot more letters Later on and therefore should be the word "include". The word “addict” is from the BIP39 wordlist however , you would've made use of “addi” for https://bookmarklethq.com/story18990574/the-ultimate-guide-to-bip39-seed-phrase-github