I took the index on the words, converted the variety to binary, included three zeros, calculated the sha256 digest, took the main part of the hexadecimal to convert it to binary, additional 3 zeros towards the 8 digits from the binary and received 00000010011 which interprets to 19 in decimal. https://thefairlist.com/story9056803/5-simple-techniques-for-bip39-seed-phrase