For words that have only 3 letters, there isn't a 4th letter. As an example with the word “add”, there won't be any a lot more letters Later on and therefore should be the word "incorporate". The word “addict” is from the BIP39 wordlist however you would've applied “addi” for https://bookmarkdistrict.com/story18615224/helping-the-others-realize-the-advantages-of-bip39-seed-phrase-mnemonics-generator