I took the index from the words, converted the variety to binary, added three zeros, calculated the sha256 digest, took the main Element of the hexadecimal to convert it to binary, included a few zeros to your 8 digits in the binary and got 00000010011 which interprets to 19 in https://nowbookmarks.com/story19017050/how-much-you-need-to-expect-you-ll-pay-for-a-good-bip39-seed-phrase-mnemonics-generator