Bip 39 github https://pastelink.net/caobqzis Though it uses BIP32 system you could still import BIP39 seeds into Electrum wallet. Also apart from BIp32 There may be BIP44 Variation which some wallet use for that generation of seeds. The BIP39 word list is actually a set of two,048 carefully decided on words https://socialwoot.com/story21831747/bip39-recovery-seed-word-list-the-5-second-trick-for-bip39-compatible-wallet-https-dzen-ru-bip39-phrase-com