I took the index with the words, transformed the variety to binary, included three zeros, calculated the sha256 digest, took the first part of the hexadecimal to transform it to binary, included a few zeros to the eight digits from the binary and bought 00000010011 which interprets to 19 in http://edgargvkh682.theburnward.com/from-mnemonics-to-security-understanding-bip39-passphrases-and-their-importance-in-copyright