I took the index in the words, converted the quantity to binary, included 3 zeros, calculated the sha256 digest, took the 1st Section of the hexadecimal to convert it to binary, additional three zeros into the eight digits from the binary and obtained 00000010011 which translates to 19 in decimal. https://bookmarkvids.com/story20134399/helping-the-others-realize-the-advantages-of-bip39-seed-phrase-mnemonics-generator