I took the index on the words, transformed the range to binary, additional a few zeros, calculated the sha256 digest, took the 1st Section of the hexadecimal to transform it to binary, additional 3 zeros towards the eight digits with the binary and acquired 00000010011 which translates to 19 in https://webookmarks.com/story4686780/how-much-you-need-to-expect-you-ll-pay-for-a-good-bip39-seed-phrase-mnemonics-generator