I took the index in the words, converted the range to binary, extra 3 zeros, calculated the sha256 digest, took the main Portion of the hexadecimal to convert it to binary, extra a few zeros on the eight digits of your binary and received 00000010011 which interprets to 19 in https://health-lists.com/story20138911/examine-this-report-on-bip39-passphrase