For words that have only three letters, there is not any 4th letter. By way of example with the word “incorporate”, there are no more letters Later on and thus must be the word "incorporate". The word “addict” is in the BIP39 wordlist however, you might have utilized “addi” for https://bookmarkunit.com/story19011918/the-5-second-trick-for-ledger-seed-phrase-bip39