Bip39 mnemonic to private key https://papaly.com/1/eMEf While it works by using BIP32 strategy you can even now import BIP39 seeds into Electrum wallet. Also aside from BIp32 There exists BIP44 version which some wallet use for the generation of seeds. For words that only have 3 letters, there's no 4th https://totalbookmarking.com/story20676609/bip39-bip44-compatible-software-wallet-rumored-buzz-on-bip39-generator-https-t-me-bip39-chat