Generate Seed Phrase From Private Key Despite the fact that it takes advantage of BIP32 process you can even now import BIP39 seeds into Electrum wallet. Also besides BIp32 There may be BIP44 Model which some wallet use for the era of seeds. 1 set of mnemonic can be utilized https://bookmarkfriend.com/story18600038/bip39-encryption-bip39-an-overview