I took the index from the words, converted the variety to binary, included three zeros, calculated the sha256 digest, took the very first part of the hexadecimal to convert it to binary, additional three zeros on the 8 digits in the binary and received 00000010011 which translates to 19 in https://bookmarktiger.com/story18763465/little-known-facts-about-bip39-seed-phrase-list