I took the index of the words, transformed the number to binary, added 3 zeros, calculated the sha256 digest, took the 1st Section of the hexadecimal to transform it to binary, extra 3 zeros on the eight digits of your binary and obtained 00000010011 which interprets to 19 in decimal. https://bookmarksden.com/story19061863/fascination-about-bip39-english-words