I took the index in the words, transformed the quantity to binary, extra three zeros, calculated the sha256 digest, took the main A part of the hexadecimal to transform it to binary, included three zeros into the eight digits of your binary and received 00000010011 which interprets to 19 in https://open.substack.com/pub/jaidenqrel955/p/unlocking-the-power-of-bip39-how?r=54uq0h&utm_campaign=post&utm_medium=web&showWelcomeOnShare=true