Bip39 random word generator http://www.mediafire.com/file/uilrjfajg2ami24/pdf-14673-57158.pdf Though it takes advantage of BIP32 approach you'll be able to nonetheless import BIP39 seeds into Electrum wallet. Also apart from BIp32 There may be BIP44 version which some wallet use to the technology of seeds. For words that only have three letters, there isn't https://binksites.com/story10362343/bip39-ledger-the-definitive-guide-to-bip39-converter-https-linktr-ee-bip39