Bip39 is not defined https://www.plurk.com/p/3hf2syltjx Despite the fact that it employs BIP32 technique you can still import BIP39 seeds into Electrum wallet. Also aside from BIp32 There's BIP44 Model which some wallet use to the technology of seeds. Before, bitcoin and also other copyright wallets ended up produced and accessed https://bip39marco.mystrikingly.com/