I took the index in the words, converted the variety to binary, extra three zeros, calculated the sha256 digest, took the first Element of the hexadecimal to transform it to binary, included a few zeros towards the eight digits with the binary and acquired 00000010011 which interprets to 19 in https://bookmarketmaven.com/story19353522/how-much-you-need-to-expect-you-ll-pay-for-a-good-valid-bip39-seed-phrase