I took the index on the words, transformed the selection to binary, added three zeros, calculated the sha256 digest, took the initial Portion of the hexadecimal to convert it to binary, included a few zeros into the eight digits with the binary and acquired 00000010011 which translates to 19 in https://hindibookmark.com/story20471717/the-ultimate-guide-to-bip39-seed-phrase-github