.
                                   G
                          o     o   l         o
                      l          d   e            l
                   d              n                 d
                 G                G                   G
                 o                 o                    o
                 l               l       d                l
                 d            d          e              d
                  e             n       G              e
                    n               o                  n
                     G              l                G
                       o             d            o
                            l         e         l
                                 d   n    d