I took the index on the words, converted the variety to binary, extra a few zeros, calculated the sha256 digest, took the main Portion of the hexadecimal to convert it to binary, extra a few zeros to the 8 digits on the binary and bought 00000010011 which interprets to 19 https://canvas.instructure.com/eportfolios/3396498/ricardooxtv236/opening-the-world-of-bip39-a-comprehensive-overview-to-mnemonic-expressions-and-word-checklists