I took the index of the words, converted the quantity to binary, additional 3 zeros, calculated the sha256 digest, took the 1st Element of the hexadecimal to convert it to binary, additional a few zeros to the eight digits of the binary and obtained 00000010011 which interprets to 19 in https://thebookmarkid.com/story18891918/how-much-you-need-to-expect-you-ll-pay-for-a-good-bip39-seed-phrase-mnemonics-generator