I took the index of the words, converted the quantity to binary, extra a few zeros, calculated the sha256 digest, took the first part of the hexadecimal to convert it to binary, added 3 zeros into the eight digits from the binary and received 00000010011 which interprets to 19 in https://www.tumblr.com/generalllamacolor/772952501127380992/opening-the-globe-of-bip39-a-comprehensive-guide