I took the index on the words, transformed the selection to binary, included three zeros, calculated the sha256 digest, took the first part of the hexadecimal to transform it to binary, extra a few zeros for the 8 digits with the binary and bought 00000010011 which translates to 19 in https://remingtonnjdi433.wordpress.com/2025/01/17/opening-the-world-of-bip39-a-comprehensive-overview-to-mnemonic-expressions-and-word-lists/