I took the index on the words, converted the selection to binary, extra three zeros, calculated the sha256 digest, took the primary part of the hexadecimal to transform it to binary, additional three zeros on the 8 digits of your binary and bought 00000010011 which interprets to 19 in decimal. https://advicebookmarks.com/story26626287/examine-this-report-on-bip39-passphrase