I took the index on the words, converted the amount to binary, additional 3 zeros, calculated the sha256 digest, took the primary Component of the hexadecimal to transform it to binary, extra 3 zeros to your eight digits on the binary and acquired 00000010011 which translates to 19 in decimal. https://socialevity.com/story20608063/facts-about-bip39-seed-phrase-github-revealed