For words that have only three letters, there isn't a 4th letter. Such as with the word “increase”, there isn't any much more letters afterwards and so needs to be the word "include". The word “addict” is in the BIP39 wordlist but you would've applied “addi” for “addict”. Security: Any https://cheapbookmarking.com/story18946718/fascination-about-invalid-bip39-phrase