I took the index of the words, transformed the selection to binary, additional 3 zeros, calculated the sha256 digest, took the main Portion of the hexadecimal to transform it to binary, additional 3 zeros into the eight digits of the binary and obtained 00000010011 which translates to 19 in decimal. https://bookmarklayer.com/story19054150/little-known-facts-about-bip39-seed-phrase-list