Kaspa bip39 https://www.plurk.com/p/3hf2syltjx Although it utilizes BIP32 method it is possible to however import BIP39 seeds into Electrum wallet. Also besides BIp32 There may be BIP44 Edition which some wallet use for the generation of seeds. For words that have only 3 letters, there is not any 4th letter. As https://bookmarksystem.com/story20519565/what-is-bip39-passphrase-bip39-checksum-an-overview-https-cutt-ly-uryc5rw7