I took the index of your words, transformed the amount to binary, included three zeros, calculated the sha256 digest, took the 1st Component of the hexadecimal to transform it to binary, additional three zeros on the 8 digits of your binary and acquired 00000010011 which translates to 19 in decimal. https://minibookmarks.com/story18973098/a-review-of-bip39-passphrase