Bip39 word list excel https://www.storeboard.com/myrtierisaliti Even though it uses BIP32 technique it is possible to still import BIP39 seeds into Electrum wallet. Also other than BIp32 There's BIP44 Variation which some wallet use with the era of seeds. For words that have only 3 letters, there is not any 4th https://seolistlinks.com/story22298049/bip39-test-vectors-a-secret-weapon-for-bip39-mnemonic-https-www-youtube-com-channel-ucupxfytj0fb78sq55hu6ocw