Bip39 Implementation Despite the fact that it takes advantage of BIP32 technique you may nevertheless import BIP39 seeds into Electrum wallet. Also besides BIp32 There may be BIP44 Variation which some wallet use for that era of seeds. You are able to see the complete source code in standalone, offline https://gogogobookmarks.com/story18689363/phantom-seed-phrase-generator-the-fact-about-bip39-phrase-that-no-one-is-suggesting