I took the index with the words, transformed the range to binary, extra 3 zeros, calculated the sha256 digest, took the initial Section of the hexadecimal to transform it to binary, included a few zeros for the 8 digits of your binary and obtained 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