I took the index on the words, converted the selection to binary, added three zeros, calculated the sha256 digest, took the main A part of the hexadecimal to convert it to binary, included 3 zeros into the eight digits from the binary and received 00000010011 which interprets to 19 in https://bookmarklethq.com/story18795398/examine-this-report-on-bip39-passphrase