I took the index of your words, transformed the number to binary, extra a few zeros, calculated the sha256 digest, took the main A part of the hexadecimal to convert it to binary, extra 3 zeros to the eight digits with the binary and obtained 00000010011 which interprets to 19 https://single-bookmark.com/story18858238/the-definitive-guide-to-bip39-seed-phrase