Official bip39 word list https://www.demilked.com/author/gobnettlmz/ BIP85: A newer proposal permitting the deterministic derivation of various BIP39 mnemonic seeds from a learn seed. For words that have only 3 letters, there isn't any 4th letter. As an example While using the word “incorporate”, there won't be any more letters Later on https://rotatesites.com/story21948801/bip85-vs-bip39-a-secret-weapon-for-bip39-mnemonic-https-x-com-tundra838554