Gen_Seed. While it employs BIP32 process you are able to nevertheless import BIP39 seeds into Electrum wallet. Also besides BIp32 There's BIP44 version which some wallet use with the era of seeds. The tool will advise a number of options for the lacking word and the appropriate a single might https://social40.com/story4112404/seed-phrase-generator-free-5-simple-statements-about-bip39-word-list-github-explained