I took the index in the words, transformed the amount to binary, extra 3 zeros, calculated the sha256 digest, took the initial A part of the hexadecimal to transform it to binary, extra 3 zeros to the 8 digits from the binary and acquired 00000010011 which interprets to 19 in https://yoursocialpeople.com/story5002868/top-guidelines-of-bip39-word-list-pdf