I took the index of your words, converted the selection to binary, extra 3 zeros, calculated the sha256 digest, took the 1st Section of the hexadecimal to transform it to binary, extra three zeros to the eight digits with the binary and acquired 00000010011 which interprets to 19 in decimal. https://bookmarkinglog.com/story18803287/fascination-about-bip39-english-words