For words that only have three letters, there is no 4th letter. For example with the word “include”, there won't be any additional letters Later on and so must be the word "increase". The word “addict” is during the BIP39 wordlist but you would've employed “addi” for “addict”. You signed https://www.livebinders.com/b/3631513?tabid=7dd978d9-81c0-05c0-ecba-7d3b4f616e73