I took the index of the words, transformed the quantity to binary, additional 3 zeros, calculated the sha256 digest, took the primary part of the hexadecimal to convert it to binary, additional 3 zeros into the 8 digits with the binary and got 00000010011 which translates to 19 in decimal. https://thebookmarkage.com/story18806896/how-much-you-need-to-expect-you-ll-pay-for-a-good-valid-bip39-seed-phrase