For words that only have 3 letters, there is no 4th letter. By way of example with the word “add”, there isn't any far more letters afterwards and thus have to be the word "incorporate". The word “addict” is within the BIP39 wordlist but you might have utilised “addi” for https://iwanttobookmark.com/story19099695/the-definitive-guide-to-bip39-seed-phrase