I took the index in the words, converted the variety to binary, added three zeros, calculated the sha256 digest, took the primary Element of the hexadecimal to convert it to binary, included three zeros into the eight digits in the binary and bought 00000010011 which translates to 19 in decimal. https://bookmarkextent.com/story20476771/helping-the-others-realize-the-advantages-of-bip39-seed-phrase-mnemonics-generator