Bip39 regex https://files.fm/u/2eemhhak2q#design Though it uses BIP32 strategy you can continue to import BIP39 seeds into Electrum wallet. Also apart from BIp32 There exists BIP44 version which some wallet use to the technology of seeds. BIP39 solves this through the use of human-readable seed phrases made up of pure language https://hypebookmarking.com/story19786542/bip39-is-not-defined-indicators-on-bip39-ian-coleman-you-should-know-https-t-me-bip39-chat