I took the index of the words, converted the selection to binary, extra a few zeros, calculated the sha256 digest, took the initial Element of the hexadecimal to convert it to binary, extra 3 zeros to the 8 digits of your binary and received 00000010011 which interprets to 19 in https://socialmediainuk.com/story20561728/helping-the-others-realize-the-advantages-of-bip39-seed-phrase-mnemonics-generator