I took the index of the words, converted the quantity to binary, included 3 zeros, calculated the sha256 digest, took the very first Section of the hexadecimal to transform it to binary, added three zeros to your eight digits with the binary and bought 00000010011 which interprets to 19 in https://total-bookmark.com/story18735544/considerations-to-know-about-bip39-word-list-pdf