For words that only have three letters, there is not any 4th letter. Such as with the word “increase”, there isn't any much more letters afterwards and so must be the word "incorporate". The word “addict” is inside the BIP39 wordlist but you would've employed “addi” for “addict”. You may https://bookmarksden.com/story19630288/the-fact-about-valid-bip39-seed-phrase-that-no-one-is-suggesting