I took the index in the words, converted the selection to binary, additional a few zeros, calculated the sha256 digest, took the initial Component of the hexadecimal to transform it to binary, included a few zeros to the 8 digits of the binary and received 00000010011 which translates to 19 https://tealbookmarks.com/story18806273/not-known-factual-statements-about-bip39-explained