I took the index of the words, transformed the selection to binary, added three zeros, calculated the sha256 digest, took the very first Portion of the hexadecimal to transform it to binary, extra a few zeros towards the 8 digits in the binary and bought 00000010011 which interprets to 19 https://agendabookmarks.com/story18782576/5-essential-elements-for-bip39-explained