Github bip39 word list https://squareblogs.net/edelinepge/using-python-to-produce-a-bip39-mnemonic-a-developers-point-of-view Although it utilizes BIP32 system you could continue to import BIP39 seeds into Electrum wallet. Also other than BIp32 You can find BIP44 Edition which some wallet use for the generation of seeds. bip39-phrase.com is undoubtedly an informational blog site focus... https://socialwebnotes.com/story4983293/bip39-spec-examine-this-report-on-bip39-vs-slip39-https-linktr-ee-bip39