I took the index of the words, converted the range to binary, extra three zeros, calculated the sha256 digest, took the initial Section of the hexadecimal to transform it to binary, extra a few zeros into the 8 digits with the binary and obtained 00000010011 which translates to 19 in https://getsocialselling.com/story4223685/the-definitive-guide-to-bip39-seed-phrase