Bip39 length https://canvas.instructure.com/eportfolios/3396498/ricardooxtv236/bip39-generator-online-the-very-best-tools-for-secure-pocketbook-development Though it utilizes BIP32 system you may nonetheless import BIP39 seeds into Electrum wallet. Also apart from BIp32 There may be BIP44 Model which some wallet use to the era of seeds. Press X to abort passphrase application and keep... https://highkeysocial.com/story6153502/bip39-languages-everything-about-bip39-word-list-txt-https-dzen-ru-bip39-phrase-com