Bip39 passphrase wallet https://squareblogs.net/edelinepge/using-python-to-produce-a-bip39-mnemonic-a-developers-point-of-view Although it takes advantage of BIP32 method you could still import BIP39 seeds into Electrum wallet. Also apart from BIp32 You can find BIP44 Model which some wallet use for that technology of seeds. Want to examine which wallets assist the BIP39 mnemonic reco... https://www.4shared.com/s/fAf7kF4dLku