Bip39 mnemonic online https://hubpages.com/@lefwenuuyr Though it works by using BIP32 system you may still import BIP39 seeds into Electrum wallet. Also apart from BIp32 There's BIP44 version which some wallet use for your era of seeds. Not like standard wallets derived only from the seed phrase, passphrase-shielded wallets are hidden https://bookmarkinglog.com/story20011812/bip39-recovery-phrase-the-definitive-guide-to-bip39-converter-https-dzen-ru-bip39-phrase-com