I took the index with the words, converted the variety to binary, included three zeros, calculated the sha256 digest, took the primary Element of the hexadecimal to convert it to binary, extra three zeros for the eight digits of the binary and acquired 00000010011 which interprets to 19 in decimal. https://postheaven.net/tiablexcen/mastering-your-copyright-protection-the-essential-overview-to-bip39-passphrases