I took the index on the words, converted the variety to binary, extra 3 zeros, calculated the sha256 digest, took the 1st Component of the hexadecimal to transform it to binary, extra 3 zeros on the eight digits in the binary and got 00000010011 which interprets to 19 in decimal. https://toplistar.com/story20807844/the-fact-about-bip39-seed-phrase-word-list-that-no-one-is-suggesting