I took the index in the words, transformed the number to binary, extra 3 zeros, calculated the sha256 digest, took the very first part of the hexadecimal to transform it to binary, additional a few zeros towards the eight digits of your binary and obtained 00000010011 which translates to 19 https://mysocialguides.com/story4254837/detailed-notes-on-copyright-wallet-seed-phrase-out-of-bip39