I took the index of the words, transformed the quantity to binary, additional a few zeros, calculated the sha256 digest, took the first Section of the hexadecimal to transform it to binary, added 3 zeros towards the eight digits in the binary and obtained 00000010011 which translates to 19 in https://pageoftoday.com/story4279493/how-much-you-need-to-expect-you-ll-pay-for-a-good-bip39-seed-phrase-mnemonics-generator