Electrum import bip39 https://giphy.com/channel/ebliciwsah While it makes use of BIP32 method you are able to however import BIP39 seeds into Electrum wallet. Also apart from BIp32 there is BIP44 Variation which some wallet use with the technology of seeds. For words that only have three letters, there is no 4th https://socialbuzzfeed.com/story5512475/bitcoin-bip39-generator-the-single-best-strategy-to-use-for-bip39-word-list-txt-https-cutt-ly-uryc5rw7