I took the index of the words, converted the quantity to binary, added 3 zeros, calculated the sha256 digest, took the 1st Component of the hexadecimal to transform it to binary, included a few zeros into the eight digits on the binary and obtained 00000010011 which interprets to 19 in https://hindibookmark.com/story20491687/not-known-facts-about-bip39-english-words