I took the index from the words, transformed the selection to binary, extra a few zeros, calculated the sha256 digest, took the primary Element of the hexadecimal to convert it to binary, included a few zeros into the 8 digits from the binary and got 00000010011 which interprets to 19 https://bookmark-search.com/story18735930/considerations-to-know-about-bip39-word-list-pdf