I took the index with the words, transformed the variety to binary, included a few zeros, calculated the sha256 digest, took the 1st Section of the hexadecimal to convert it to binary, additional 3 zeros for the 8 digits of your binary and bought 00000010011 which interprets to 19 in https://scrapbookmarket.com/story19474445/how-much-you-need-to-expect-you-ll-pay-for-a-good-bip39-seed-phrase-mnemonics-generator