I took the index on the words, transformed the number to binary, added 3 zeros, calculated the sha256 digest, took the 1st Section of the hexadecimal to convert it to binary, included three zeros on the 8 digits on the binary and acquired 00000010011 which interprets to 19 in decimal. https://bookmarkingfeed.com/story18955072/little-known-facts-about-bip39-seed-phrase-list