I took the index with the words, converted the number to binary, additional 3 zeros, calculated the sha256 digest, took the initial Element of the hexadecimal to convert it to binary, additional a few zeros towards the eight digits from the binary and received 00000010011 which translates to 19 in https://bookmark-master.com/story19018716/how-much-you-need-to-expect-you-ll-pay-for-a-good-valid-bip39-seed-phrase