For words that only have three letters, there is no 4th letter. One example is with the word “increase”, there isn't any additional letters Later on and thus need to be the word "include". The word “addict” is inside the BIP39 wordlist however you would've utilised “addi” for “addict”. gravity https://maroonbookmarks.com/story18713611/considerations-to-know-about-bip39-seed-phrase-generator