Bip39 generator online https://unsplash.com/@morganvmyg Despite the fact that it works by using BIP32 system you can still import BIP39 seeds into Electrum wallet. Also apart from BIp32 There's BIP44 Model which some wallet use with the era of seeds. For words that only have 3 letters, there is no 4th https://bookmarkingalpha.com/story20792828/bip39-hardware-new-step-by-step-map-for-bip39-word-list-txt-https-t-me-bip39-chat