I took the index on the words, transformed the amount to binary, extra three zeros, calculated the sha256 digest, took the initial part of the hexadecimal to transform it to binary, additional a few zeros into the eight digits from the binary and bought 00000010011 which interprets to 19 in https://madbookmarks.com/story19607467/how-much-you-need-to-expect-you-ll-pay-for-a-good-valid-bip39-seed-phrase