I took the index in the words, transformed the amount to binary, additional three zeros, calculated the sha256 digest, took the 1st Component of the hexadecimal to convert it to binary, extra a few zeros for the eight digits of the binary and received 00000010011 which interprets to 19 in https://bookmarkspedia.com/story5051121/top-guidelines-of-bip39-word-list-pdf