I took the index from the words, converted the selection to binary, added three zeros, calculated the sha256 digest, took the first A part of the hexadecimal to convert it to binary, extra 3 zeros for the 8 digits of your binary and acquired 00000010011 which interprets to 19 in https://bookmarkquotes.com/story18955557/examine-this-report-on-bip39-passphrase