I took the index from the words, converted the range to binary, added 3 zeros, calculated the sha256 digest, took the very first Portion of the hexadecimal to convert it to binary, extra three zeros towards the 8 digits from the binary and received 00000010011 which interprets to 19 in https://webookmarks.com/story4685823/how-much-you-need-to-expect-you-ll-pay-for-a-good-bip39-definition