I took the index of the words, converted the quantity to binary, added three zeros, calculated the sha256 digest, took the first Component of the hexadecimal to transform it to binary, additional three zeros into the eight digits in the binary and got 00000010011 which translates to 19 in decimal. https://socialbuzzfeed.com/story4318486/how-much-you-need-to-expect-you-ll-pay-for-a-good-bip39-seed-phrase-mnemonics-generator