I took the index of your words, converted the variety to binary, additional 3 zeros, calculated the sha256 digest, took the 1st Component of the hexadecimal to convert it to binary, additional three zeros on the 8 digits of the binary and acquired 00000010011 which translates to 19 in decimal. https://madbookmarks.com/story19140432/the-greatest-guide-to-seed-phrase-bip39