Bip39 dice https://archerujcb329.tearosediner.net/comprehending-the-function-of-bip39-in-copyright-pocketbooks Although it takes advantage of BIP32 strategy it is possible to however import BIP39 seeds into Electrum wallet. Also besides BIp32 There's BIP44 Edition which some wallet use to the generation of seeds. For words that have only 3 letters, there is not any 4th letter. For https://growthbookmarks.com/story20644865/bip39-dotmap-5-tips-about-bip39-checksum-you-can-use-today-https-cutt-ly-uryc5rw7