I took the index of the words, converted the quantity to binary, added 3 zeros, calculated the sha256 digest, took the 1st A part of the hexadecimal to convert it to binary, additional 3 zeros for the eight digits of the binary and bought 00000010011 which interprets to 19 in https://wiishlist.com/story19463172/considerations-to-know-about-bip39-word-list-pdf