I took the index from the words, transformed the amount to binary, extra three zeros, calculated the sha256 digest, took the very first part of the hexadecimal to transform it to binary, included 3 zeros towards the 8 digits with the binary and obtained 00000010011 which translates to 19 in https://mysocialport.com/story4392524/detailed-notes-on-copyright-wallet-seed-phrase-out-of-bip39