I took the index in the words, converted the quantity to binary, additional 3 zeros, calculated the sha256 digest, took the initial Portion of the hexadecimal to transform it to binary, additional 3 zeros for the 8 digits on the binary and obtained 00000010011 which interprets to 19 in decimal. https://socialrator.com/story9420234/little-known-facts-about-bip39-seed-phrase-list