.
                                    G
                         ­ i        i n        i
                        n         n i          n
                       n           e             n
                       i         G    i            i
                       e         n   n           e
                        G        i    e          G
            ­              i        G  i          i
                          ­ n      n n      n
                               n    I     n
                                     E