I took the index of your words, converted the quantity to binary, additional three zeros, calculated the sha256 digest, took the very first Element of the hexadecimal to convert it to binary, extra a few zeros on the 8 digits on the binary and bought 00000010011 which interprets to 19 https://pr7bookmark.com/story19049002/helping-the-others-realize-the-advantages-of-bip39-mnemonic-phrase-tool