For words that only have three letters, there's no 4th letter. By way of example with the word “increase”, there isn't any extra letters afterwards and therefore must be the word "incorporate". The word “addict” is from the BIP39 wordlist however , you would've utilised “addi” for “addict”. You might https://bookmarkleader.com/story18841237/how-much-you-need-to-expect-you-ll-pay-for-a-good-bip39-definition