I took the index in the words, transformed the number to binary, added 3 zeros, calculated the sha256 digest, took the 1st A part of the hexadecimal to convert it to binary, extra 3 zeros to your eight digits from the binary and acquired 00000010011 which interprets to 19 in https://nanobookmarking.com/story18873266/the-2-minute-rule-for-bip39-all-words