I took the index from the words, transformed the variety to binary, added three zeros, calculated the sha256 digest, took the primary Portion of the hexadecimal to convert it to binary, additional three zeros for the eight digits in the binary and acquired 00000010011 which interprets to 19 in decimal. https://ariabookmarks.com/story4622135/not-known-factual-statements-about-bip39-explained