I took the index of your words, transformed the quantity to binary, added 3 zeros, calculated the sha256 digest, took the primary Component of the hexadecimal to convert it to binary, added a few zeros towards the eight digits from the binary and got 00000010011 which translates 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