Bip39 wiki https://andersonehmh757.timeforchangecounselling.com/getting-your-first-bip39-passphrase-idea Although it utilizes BIP32 method you are able to however import BIP39 seeds into Electrum wallet. Also aside from BIp32 there is BIP44 version which some wallet use for the generation of seeds. The BIP39 word list can be a list of 2,048 very carefully preferred words https://fatallisto.com/story10198026/bip39-explained-an-unbiased-view-of-bip39-2048-words-https-x-com-tundra838554