Bip39 Wallet Some words are shorter than four letters, including the word “act”. Other words are more time than 4 letters, including “abstract”. Just one list of mnemonic can be used to generate various addresses. This method of creating account was launched in BIP32 & BIP39 very long time in https://socialexpresions.com/story4021625/electrum-seed-phrase-generator-the-basic-principles-of-seed-phrase-generator