I took the index of your words, transformed the selection to binary, additional 3 zeros, calculated the sha256 digest, took the 1st Element of the hexadecimal to transform it to binary, included 3 zeros to your eight digits of your binary and bought 00000010011 which interprets to 19 in decimal. https://mysocialport.com/story4344485/fascination-about-bip39-english-words