I took the index with the words, converted the quantity to binary, added three zeros, calculated the sha256 digest, took the initial Portion of the hexadecimal to convert it to binary, extra three zeros on the eight digits of the binary and got 00000010011 which translates to 19 in decimal. https://45listing.com/story20677112/new-step-by-step-map-for-bip39-english-words