I took the index from the words, converted the amount to binary, included a few zeros, calculated the sha256 digest, took the 1st Section of the hexadecimal to convert it to binary, added 3 zeros towards the eight digits from the binary and received 00000010011 which translates to 19 in https://canvas.instructure.com/eportfolios/3396498/ricardooxtv236/opening-the-world-of-bip39-a-comprehensive-overview-to-mnemonic-expressions-and-word-checklists