Bip39 regex https://www.gamespot.com/profile/pothirpeib/ Although it uses BIP32 technique you are able to continue to import BIP39 seeds into Electrum wallet. Also apart from BIp32 there is BIP44 version which some wallet use for your generation of seeds. Due to the cryptographic design of BIP-39, a weak passphrase would not lessen https://socialdummies.com/story5462873/bip39-generator-with-balance-bip39-generator-secrets-https-dzen-ru-bip39-phrase-com