I took the index from the words, converted the quantity to binary, added three zeros, calculated the sha256 digest, took the initial Section of the hexadecimal to convert it to binary, additional three zeros for the 8 digits in the binary and acquired 00000010011 which translates to 19 in decimal. https://www.tumblr.com/generalllamacolor/772952501127380992/opening-the-globe-of-bip39-a-comprehensive-guide