I took the index on the words, converted the number to binary, included 3 zeros, calculated the sha256 digest, took the initial Portion of the hexadecimal to transform it to binary, included 3 zeros on the eight digits from the binary and acquired 00000010011 which translates to 19 in decimal. https://socialwebconsult.com/story4394495/how-much-you-need-to-expect-you-ll-pay-for-a-good-bip39-seed-phrase-mnemonics-generator