Bip39 or slip39 https://remingtonjszi611.almoheet-travel.com/using-python-to-create-a-bip39-mnemonic-a-designer-s-perspective BIP85: A newer proposal permitting the deterministic derivation of various BIP39 mnemonic seeds from a master seed. For words that have only 3 letters, there is no 4th letter. One example is With all the word “incorporate”, there won't be any more letters after... https://socialbraintech.com/story5103998/what-is-bip39-seed-new-step-by-step-map-for-bip39-standard-https-x-com-tundra838554