For words that have only 3 letters, there's no 4th letter. Such as with the word “increase”, there isn't any extra letters afterwards and therefore have to be the word "add". The word “addict” is during the BIP39 wordlist but you would've utilized “addi” for “addict”. In this article we’ll https://bookmarkfox.com/story4387423/examine-this-report-on-bip39-mnemonic-phrase-tool