I took the index on the words, transformed the quantity to binary, extra three zeros, calculated the sha256 digest, took the primary Portion of the hexadecimal to convert it to binary, additional three zeros into the 8 digits with the binary and received 00000010011 which translates to 19 in decimal. https://bookmarksusa.com/story18941896/how-much-you-need-to-expect-you-ll-pay-for-a-good-bip39-seed-phrase-mnemonics-generator