For words that have only three letters, there isn't a 4th letter. By way of example with the word “incorporate”, there aren't any more letters Later on and therefore has to be the word "include". The word “addict” is in the BIP39 wordlist but you might have utilized “addi” for https://sociallytraffic.com/story3896445/new-step-by-step-map-for-ledger-seed-phrase-bip39