From Bip39 Import Mnemonic For instance, go ahead and take word “accident” for instance. Its 1st four letters are “acci”. If you consider the BIP39 word list, you will note that no other word starts with “acci”. A lot of people back up their wallet seed phrases or personal keys https://social40.com/story4096863/bip39-ozon-bip39-an-overview