For words that only have three letters, there's no 4th letter. Such as with the word “increase”, there are no extra letters afterwards and so must be the word "add". The word “addict” is from the BIP39 wordlist however, you might have utilized “addi” for “addict”. In this way, we https://sound-social.com/story8873144/the-greatest-guide-to-seed-phrase-bip39