I took the index on the words, transformed the quantity to binary, additional 3 zeros, calculated the sha256 digest, took the very first part of the hexadecimal to convert it to binary, extra a few zeros into the 8 digits on the binary and obtained 00000010011 which translates to 19 https://ezmarkbookmarks.com/story18909154/facts-about-bip39-seed-phrase-github-revealed