Bip39 binary https://edgargvkh682.theburnward.com/a-novice-s-overview-to-getting-a-bip39-mnemonic-expression BIP85: A newer proposal enabling the deterministic derivation of a number of BIP39 mnemonic seeds from a master seed. For words that have only 3 letters, there is not any 4th letter. One example is While using the word “include”, there isn't any more letters Later on https://directmysocial.com/story5316706/bip39-one-new-step-by-step-map-for-bip39-standard-https-www-youtube-com-channel-ucupxfytj0fb78sq55hu6ocw