I took the index of your words, transformed the number to binary, extra a few zeros, calculated the sha256 digest, took the main Section of the hexadecimal to convert it to binary, additional 3 zeros on the eight digits of the binary and got 00000010011 which interprets to 19 in https://bookmarkinglog.com/story18800868/considerations-to-know-about-bip39-word-list-pdf