For words that only have 3 letters, there isn't a 4th letter. For example with the word “add”, there won't be any a lot more letters afterwards and so should be the word "increase". The word “addict” is while in the BIP39 wordlist however you would have utilized “addi” for https://socialbookmarkgs.com/story18853669/5-essential-elements-for-bip39-explained