I took the index of the words, converted the number to binary, additional a few zeros, calculated the sha256 digest, took the 1st Section of the hexadecimal to transform it to binary, included three zeros to your 8 digits of the binary and acquired 00000010011 which translates to 19 in https://socialmediaentry.com/story4267250/5-essential-elements-for-bip39-explained