- 2015 . (12 ):


                 3                    25                  51
     1                                        5                    27                  53
     2                                        7                    29
     5                                        7                  31
     6                                        9                    33
     9                                        9                  35
     16                                      17                  39
     17                                      3               41
     21                                      11             45