I took the index in the words, transformed the amount to binary, included 3 zeros, calculated the sha256 digest, took the main Component of the hexadecimal to convert it to binary, added 3 zeros into the eight digits of the binary and got 00000010011 which translates to 19 in decimal. https://opensocialfactory.com/story19638433/little-known-facts-about-bip39-seed-phrase-list