I took the index in the words, transformed the number to binary, extra a few zeros, calculated the sha256 digest, took the first part of the hexadecimal to transform it to binary, added 3 zeros for the 8 digits with the binary and acquired 00000010011 which translates to 19 in https://bookmarkloves.com/story21005948/how-much-you-need-to-expect-you-ll-pay-for-a-good-bip39-seed-phrase-mnemonics-generator