Bip39 word generator http://www.mediafire.com/file/uilrjfajg2ami24/pdf-14673-57158.pdf Though it employs BIP32 technique you may however import BIP39 seeds into Electrum wallet. Also apart from BIp32 There's BIP44 version which some wallet use for that era of seeds. How much security does a passphrase increase? A BIP39 passphrase noticeably enhances your Bitcoin wallet’s protection. https://guideyoursocial.com/story5517750/bip39-wallet-recovery-the-single-best-strategy-to-use-for-bip39-recovery-tool-https-linktr-ee-bip39