I took the index in the words, converted the selection to binary, included a few zeros, calculated the sha256 digest, took the first part of the hexadecimal to convert it to binary, included a few zeros into the eight digits of your binary and bought 00000010011 which interprets to 19 https://nanobookmarking.com/story18740295/not-known-factual-statements-about-bip39-explained