OrderedList& UnorderedList are not displayed on the toolbar

Hi,

I am using ckeditor with php5. I set up my toolbar as follows in the config.js file:

config.toolbar_Basic2 =  [ [ 'Bold','Italic','-','OrderedList','UnorderedList']
                                  , [ 'Save', '-', 'SpellChecker', '-', 'Maximize' ]
                                      ];

And in the HTML document, I am calling it as follows:

<script type="text/javascript">
        CKEDITOR.replace( 'editor1',
         {
            toolbar : 'Basic2'
         }
        );
       </script>

I can see all buttons that I set up above except for OrderedList and UnorderedList functions. They are not displayed on the toolbar. What am I missing here?

Thanks in advance.