Unknown bip39 wordlist https://hubpages.com/@lefwenuuyr While it takes advantage of BIP32 approach you could even now import BIP39 seeds into Electrum wallet. Also other than BIp32 there is BIP44 version which some wallet use for the generation of seeds. For words that only have three letters, there is not any 4th https://go.bubbl.us/ebe220/f17a?/Bookmarks