I took the index from the words, converted the range to binary, additional a few zeros, calculated the sha256 digest, took the 1st Component of the hexadecimal to convert it to binary, extra 3 zeros to the 8 digits of your binary and obtained 00000010011 which translates to 19 in https://bookmarkingace.com/story18946441/little-known-facts-about-bip39-words