I took the index on the words, converted the variety to binary, additional three zeros, calculated the sha256 digest, took the main Element of the hexadecimal to transform it to binary, extra 3 zeros to your eight digits with the binary and got 00000010011 which interprets to 19 in decimal. https://geilebookmarks.com/story18802050/helping-the-others-realize-the-advantages-of-bip39-mnemonic-phrase-tool