I took the index on the words, transformed the quantity to binary, extra 3 zeros, calculated the sha256 digest, took the main Element of the hexadecimal to transform it to binary, extra three zeros towards the 8 digits from the binary and received 00000010011 which interprets to 19 in decimal. https://bookmarkingdelta.com/story18812119/a-review-of-bip39-passphrase