I took the index on the words, converted the number to binary, extra three zeros, calculated the sha256 digest, took the 1st A part of the hexadecimal to convert it to binary, extra three zeros to your 8 digits from the binary and got 00000010011 which translates to 19 in https://getsocialsource.com/story4249394/how-much-you-need-to-expect-you-ll-pay-for-a-good-valid-bip39-seed-phrase