Bip39 Passphrase Github Some words are shorter than 4 letters, including the word “act”. Other words are longer than four letters, which include “abstract”. Just one list of mnemonic can be used to develop several addresses. This method of making account was launched in BIP32 & BIP39 very long time https://funny-lists.com/story20149829/bip39-wallet-recovery-5-essential-elements-for-seed-phrase-generator