I took the index in the words, transformed the amount to binary, included three zeros, calculated the sha256 digest, took the very first Component of the hexadecimal to convert it to binary, additional a few zeros into the 8 digits with the binary and bought 00000010011 which interprets to 19 https://todaybookmarks.com/story18961559/not-known-factual-statements-about-bip39-explained