I took the index of the words, transformed the amount to binary, additional three zeros, calculated the sha256 digest, took the initial Portion of the hexadecimal to convert it to binary, additional three zeros for the eight digits from the binary and obtained 00000010011 which interprets to 19 in decimal. http://jaspermuxp089.yousher.com/from-mnemonics-to-security-comprehending-bip39-passphrases-and-their-significance-in-copyright