For words that have only three letters, there isn't any 4th letter. Such as with the word “incorporate”, there isn't any a lot more letters Later on and therefore must be the word "insert". The word “addict” is from the BIP39 wordlist but you might have utilized “addi” for “addict”. https://wisesocialsmedia.com/story5047642/the-invalid-bip39-phrase-diaries