For words that only have 3 letters, there isn't any 4th letter. For instance with the word “include”, there are no additional letters afterwards and therefore needs to be the word "incorporate". The word “addict” is within the BIP39 wordlist however, you would have applied “addi” for “addict”. You signed https://bookmarkjourney.com/story18826861/the-fact-about-bip39-seed-phrase-word-list-that-no-one-is-suggesting