I took the index on the words, converted the amount to binary, included 3 zeros, calculated the sha256 digest, took the main Portion of the hexadecimal to transform it to binary, extra a few zeros for the 8 digits of your binary and received 00000010011 which interprets to 19 in https://getsocialnetwork.com/story4513359/examine-this-report-on-bip39-passphrase