I took the index on the words, converted the variety to binary, included a few zeros, calculated the sha256 digest, took the 1st Portion of the hexadecimal to convert it to binary, additional three zeros to the 8 digits of your binary and got 00000010011 which translates to 19 in https://agendabookmarks.com/story18748085/not-known-facts-about-bip39-english-words