I took the index of your words, transformed the selection to binary, included a few zeros, calculated the sha256 digest, took the first part of the hexadecimal to convert it to binary, added 3 zeros to your 8 digits from the binary and got 00000010011 which translates to 19 in https://socialbaskets.com/story4355702/not-known-facts-about-bip39-english-words