我
   的
     "鴨"
         力
            快
               "豹"
                   "俵"
                       了
                          所
                             以
                                很
                                   討
                                     "燕"
                                   我
                                的
                            "鴨"
                          力
                       快
                   "豹"
                "俵"
               了
            所
          以
       很
     討
"燕"
   我
     的
       "鴨"
          力
             快
               "豹"
                   "俵"
                       了
                          所
                             以
                                很
                                   討
                                     "燕"