I took the index from the words, transformed the quantity to binary, included 3 zeros, calculated the sha256 digest, took the primary Section of the hexadecimal to convert it to binary, added 3 zeros to your eight digits with the binary and acquired 00000010011 which translates to 19 in decimal. https://webnowmedia.com/story4228046/how-much-you-need-to-expect-you-ll-pay-for-a-good-bip39-definition