Bip39 combinations https://telegra.ph/Producing-Custom-Bitcoin-Addresses-A-Take-A-Look-At-BIP39-Strategies-06-28 Although it uses BIP32 technique you could continue to import BIP39 seeds into Electrum wallet. Also in addition to BIp32 There may be BIP44 Model which some wallet use for your technology of seeds. BIP39 solves this by using human-readable seed phrases composed of normal l... https://alphabookmarking.com/story20012640/bip39-tool-github-5-essential-elements-for-bip39-word-list-pdf-https-www-youtube-com-channel-ucupxfytj0fb78sq55hu6ocw