I took the index in the words, transformed the amount to binary, extra a few zeros, calculated the sha256 digest, took the 1st Element of the hexadecimal to transform it to binary, extra a few zeros to the 8 digits of the binary and acquired 00000010011 which translates to 19 https://bookmarkforest.com/story18756234/bip39-seed-phrase-mnemonics-generator-an-overview