I took the index in the words, transformed the number to binary, included three zeros, calculated the sha256 digest, took the very first part of the hexadecimal to convert it to binary, extra a few zeros towards the 8 digits in the binary and acquired 00000010011 which interprets to 19 https://bookmarkshome.com/story4537738/helping-the-others-realize-the-advantages-of-bip39-mnemonic-phrase-tool