For words that only have 3 letters, there isn't any 4th letter. Such as with the word “add”, there isn't any a lot more letters Later on and thus needs to be the word "insert". The word “addict” is from the BIP39 wordlist but you might have employed “addi” for https://letusbookmark.com/story21254233/an-unbiased-view-of-bip39-seed-phrase-github