UPSC 2015 - PYQS A small river named Duden flows by their place and supplies it with the necessary regelialia. It is a paradise UPSC 2016 - PYQS A small river named Duden flows by their place and supplies it with the necessary regelialia. It is a paradise UPSC 2017 - PYQS A small river named Duden flows by their place and supplies it with the necessary regelialia. It is a paradise