I took the index from the words, converted the amount to binary, additional 3 zeros, calculated the sha256 digest, took the primary Portion of the hexadecimal to transform it to binary, included a few zeros on the 8 digits from the binary and obtained 00000010011 which interprets to 19 in https://bookmarkwuzz.com/story18822675/how-much-you-need-to-expect-you-ll-pay-for-a-good-bip39-seed-phrase-mnemonics-generator