For words that have only three letters, there isn't a 4th letter. As an example with the word “add”, there isn't any a lot more letters Later on and thus needs to be the word "add". The word “addict” is during the BIP39 wordlist however, you would've utilized “addi” for https://livebookmarking.com/story18801070/the-ultimate-guide-to-bip39-seed-phrase-github