Bip39 npmjs https://felixkkjt585.theglensecret.com/bip39-word-checklist-generator-crafting-your-own-special-seed-phrase Though it works by using BIP32 system you'll be able to nevertheless import BIP39 seeds into Electrum wallet. Also other than BIp32 there is BIP44 Model which some wallet use to the era of seeds. This extra complexity enhances the chance of misplacing the passphrase,... https://cutt.ly/urYc5rW7