For words that have only 3 letters, there isn't any 4th letter. Such as with the word “increase”, there won't be any a lot more letters Later on and so have to be the word "include". The word “addict” is in the BIP39 wordlist however, you would have applied “addi” https://mediajx.com/story21553836/new-step-by-step-map-for-ledger-seed-phrase-bip39