Bip32 and bip39 https://list.ly/abregeouoh Despite the fact that it takes advantage of BIP32 process you are able to however import BIP39 seeds into Electrum wallet. Also apart from BIp32 There's BIP44 Model which some wallet use to the technology of seeds. For words that only have three letters, there isn't https://bookmarkshut.com/story21209892/bip-39-index-5-essential-elements-for-bip39-word-list-pdf-https-www-youtube-com-channel-ucupxfytj0fb78sq55hu6ocw