I took the index in the words, converted the variety to binary, extra 3 zeros, calculated the sha256 digest, took the main A part of the hexadecimal to convert it to binary, added three zeros to your eight digits with the binary and obtained 00000010011 which interprets to 19 in https://bookmarkindexing.com/story18702813/the-basic-principles-of-bip39-passphrase-generator