I took the index in the words, transformed the selection to binary, added a few zeros, calculated the sha256 digest, took the main Component of the hexadecimal to convert it to binary, extra a few zeros to your eight digits of the binary and received 00000010011 which translates to 19 https://getsocialnetwork.com/story4303340/how-much-you-need-to-expect-you-ll-pay-for-a-good-bip39-definition