For words that have only 3 letters, there isn't any 4th letter. By way of example with the word “incorporate”, there isn't any extra letters Later on and therefore needs to be the word "increase". The word “addict” is inside the BIP39 wordlist however you would have utilised “addi” for https://thejillist.com/story8953327/facts-about-bip39-seed-phrase-github-revealed