I took the index of the words, converted the selection to binary, additional three zeros, calculated the sha256 digest, took the main Element of the hexadecimal to convert it to binary, extra three zeros for the 8 digits in the binary and acquired 00000010011 which translates to 19 in decimal. https://socialbaskets.com/story4597281/considerations-to-know-about-bip39-word-list-pdf