I took the index from the words, converted the number to binary, extra 3 zeros, calculated the sha256 digest, took the main Section of the hexadecimal to transform it to binary, included three zeros for the eight digits in the binary and received 00000010011 which interprets to 19 in decimal. https://royalbookmarking.com/story18898124/the-fact-about-bip39-seed-phrase-word-list-that-no-one-is-suggesting