I took the index on the words, transformed the range to binary, extra 3 zeros, calculated the sha256 digest, took the 1st part of the hexadecimal to convert it to binary, included a few zeros into the eight digits with the binary and received 00000010011 which interprets to 19 in https://socialislife.com/story4357053/how-much-you-need-to-expect-you-ll-pay-for-a-good-bip39-seed-phrase-mnemonics-generator