Bip39 balance checker https://jsbin.com/titaniseko Implementations like SLIP39 lengthen BIP39's capabilities by splitting seed phrases into various shares, demanding a predefined threshold of shares to reconstruct the first seed. This solution improves safety by reducing solitary points of failure. For words that only have 3 letters, there isn't a 4th letter. https://top100bookmark.com/story20524386/bip39-to-seed-about-bip39-2048-words-https-www-youtube-com-channel-ucupxfytj0fb78sq55hu6ocw