Bip39 Passphrase Inheritance Some words are shorter than 4 letters, such as the word “act”. Other words are more time than 4 letters, like “summary”. By moving into it right into a compatible copyright wallet software or components wallet machine, the user can regenerate the wallet's personal keys and addresses. https://socialbuzzfeed.com/story4011083/iancoleman-bip39-github-the-basic-principles-of-seed-phrase-generator