I took the index on the words, transformed the variety to binary, added 3 zeros, calculated the sha256 digest, took the 1st A part of the hexadecimal to transform it to binary, added 3 zeros to the 8 digits of your binary and received 00000010011 which interprets to 19 in https://web.archive.org/web/20241213201435/https://bip39-phrase.com/