I took the index on the words, converted the amount to binary, additional three zeros, calculated the sha256 digest, took the primary Portion of the hexadecimal to convert it to binary, included a few zeros into the 8 digits on the binary and obtained 00000010011 which interprets to 19 in https://cyberbookmarking.com/story19535440/detailed-notes-on-copyright-wallet-seed-phrase-out-of-bip39