I took the index on the words, converted the selection to binary, additional 3 zeros, calculated the sha256 digest, took the initial part of the hexadecimal to convert it to binary, extra 3 zeros to your 8 digits of the binary and bought 00000010011 which interprets to 19 in decimal. https://sociallawy.com/story9075540/helping-the-others-realize-the-advantages-of-bip39-mnemonic-phrase-tool