I took the index on the words, converted the number to binary, extra three zeros, calculated the sha256 digest, took the primary Element of the hexadecimal to transform it to binary, additional three zeros to the eight digits with the binary and bought 00000010011 which interprets to 19 in decimal. https://nanobookmarking.com/story18744138/getting-my-bip39-words-to-numbers-to-work