.
                                   T
                            h    h e    h
                           e     P u      e
                          P      s  s        P
                         u         y          u
                          s       G  a       s
                           s      z   e       s
                            y      t  t       y
                             G      e      G
                                  a  ○  a
                                      z
                                      e