I took the index of the words, transformed the range to binary, added a few zeros, calculated the sha256 digest, took the 1st A part of the hexadecimal to convert it to binary, additional 3 zeros on the 8 digits of your binary and got 00000010011 which interprets to 19 https://doctorbookmark.com/story18905035/examine-this-report-on-bip39-passphrase