for 6,Two E-L Tringles can be put anywhere.

来源: jinjing 于 2011-08-09 16:46:53 [] [旧帖] [给我悄悄话] 阅读数 : (622 bytes)
回答: 6 由 布衣之才 于 2011-08-09 13:21:17

          o

      o      o           

 

                            0

                        o       o       also OK.

请您先登陆，再发跟帖！