@   /  S   /      /
                    %   /  @   @      @      @





      %        @
     @@       /    @       @
    @ @                      @                              @@
    @ @     @ /             @@                              @ @
    / @     %                @                             @@ @
      @                      @                             @  @
      @/                     @                               @/
                     %                                      @@
                           @ @                               @
      %                      %                               %
                   @ @
              %        @     %      /       //       %    @  /
              @       @       @      @      @@       @       @
              @            @ @ @    @ @   @@@@      @ @   @@@@@/
                             @      @       /@       @      @@
    /                //    % / %   %/@     % / %  % /@%
                                                   @ @
    //                /                            S @     @
     @                               @@

     @@@ @@ @ @ @@@@@ @ @
      /                             /        /      /        /
                              @      @      @        @      @
            @ @      @                 @  @        @ @ @  @ @ @/   @ @
            @ @                              @               @     @@@
     //%            / /    % / %           % / %  % /@%@
                                             @
              @
      @       @
      %       %

      %      %      / /      /      S                       /
                    @ @      @      @ @    @        @ @    @ @
       @   @ @      @ @    @ @ @      @    @   @  @   @        @  @
             @      @ @      @      @ /    @ @ /  @ @        @
       %     @ %    / /    % / %      @      / @
             @                     @ % @  @   @    /
             @                             @ @    @          /
                                      @           @            @



                    / /             /
                             @      @
       @                   @ @ @    @ @    /
                             @      @        /
       %                     / %    / %      @
                             @
                             /
                               @