I took the index in the words, transformed the number to binary, additional three zeros, calculated the sha256 digest, took the main Portion of the hexadecimal to transform it to binary, added 3 zeros towards the 8 digits of 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