I took the index in the words, converted the range to binary, added a few zeros, calculated the sha256 digest, took the primary A part of the hexadecimal to transform it to binary, included three zeros towards the 8 digits on the binary and bought 00000010011 which translates to 19 https://www.mediafire.com/file/qad32ryob76naol/pdf-7033-8222.pdf/file