I took the index on the words, transformed the variety to binary, added 3 zeros, calculated the sha256 digest, took the main Section of the hexadecimal to transform it to binary, additional a few zeros towards the eight digits from the binary and obtained 00000010011 which translates to 19 in https://pageoftoday.com/story4911263/not-known-facts-about-bip39-english-words