I took the index from the words, converted the number to binary, included 3 zeros, calculated the sha256 digest, took the first Portion of the hexadecimal to transform it to binary, included 3 zeros for the eight digits of your binary and acquired 00000010011 which interprets to 19 in decimal. https://bookmarkstime.com/story19192068/not-known-facts-about-bip39-english-words