For words that have only 3 letters, there's no 4th letter. Such as with the word “increase”, there isn't any extra letters Later on and therefore should be the word "insert". The word “addict” is inside the BIP39 wordlist but you might have utilized “addi” for “addict”. You could have https://singnalsocial.com/story4039254/examine-this-report-on-bip39-mnemonic-phrase-tool