For words that have only 3 letters, there is no 4th letter. By way of example with the word “incorporate”, there won't be any a lot more letters Later on and therefore needs to be the word "include". The word “addict” is during the BIP39 wordlist however , you would https://socialislife.com/story4608878/how-much-you-need-to-expect-you-ll-pay-for-a-good-valid-bip39-seed-phrase