Bip39 table https://list.ly/i/11078004 The last stage of BIP-39 is building the actual binary seed that is then employed as a grasp key in BIP-32 deterministic wallet or using other techniques. For words that have only three letters, there is no 4th letter. For instance While using the word “add”, there https://friendlybookmark.com/story19901763/bip39-hash-bip39-passphrase-generator-options-https-linktr-ee-bip39