I took the index in the words, transformed the variety to binary, added 3 zeros, calculated the sha256 digest, took the 1st Element of the hexadecimal to transform it to binary, added three zeros for the 8 digits of the binary and acquired 00000010011 which translates to 19 in decimal. https://bookmarkpath.com/story18786272/the-ultimate-guide-to-bip39-seed-phrase-mnemonics-generator