I took the index of your words, converted the variety to binary, included three zeros, calculated the sha256 digest, took the primary Section of the hexadecimal to transform it to binary, extra a few zeros towards the 8 digits from the binary and obtained 00000010011 which interprets to 19 in https://bookmarkja.com/story20882092/the-basic-principles-of-bip39-passphrase-generator