For words that have only 3 letters, there isn't any 4th letter. Such as with the word “incorporate”, there won't be any more letters afterwards and so must be the word "incorporate". The word “addict” is in the BIP39 wordlist however , you would've used “addi” for “addict”. Unlock your https://single-bookmark.com/story19000366/bip39-seed-phrase-mnemonics-generator-an-overview