I took the index from the words, converted the amount to binary, extra a few zeros, calculated the sha256 digest, took the primary Section of the hexadecimal to convert it to binary, additional 3 zeros on the 8 digits in the binary and acquired 00000010011 which translates to 19 in https://bookmarktiger.com/story18880051/5-essential-elements-for-bip39-explained