Bip39 Last Word Some words are shorter than four letters, including the word “act”. Other words are for a longer time than 4 letters, like “summary”. A single list of mnemonic may be used to make multiple addresses. This process of generating account was released in BIP32 & BIP39 long https://privatebookmark.com/story18654076/bip39-bip44-compatible-software-wallet-the-basic-principles-of-seed-phrase-generator