title: Generate UTF-8 character list
body: <p>I have a UTF-8 file which I convert to ISO-8859-1 before sending the file to a consuming system that does not understand the UTF-8. Our current issue is that when we run the iconv process on the UTF-8 file, some characters are getting converted to '?'. Currently, for every failing character, we have been providing a fix.
  I am trying to understand if it is possible to create a file which has all possible UTF-8 characters? The intent is to downgrade them using iconv and identify the characters that are getting replaced with '?'</p>