Bip39 alternative https://www.storeboard.com/blogs/ai-for-small-business/browsing-the-globe-of-bitcoin-addresses-the-value-of-bip39/6240727 That is why you ought to produce a backup of the seed phrase utilizing metallic copyright wallet like Coinplate, that happen to be 100% stainless steel and BIP39 compatible. For words that only have 3 letters, there isn't any 4th letter. One examp... https://www.storeboard.com/myrtierisaliti