* Title:Repeated Difference
* Designer:Rene
* Type:Solution
* Follows:gemobem
* Physics:2
 g                                                
 K +                                              
     |        F   F                               
>M.:K                                             
 M            M   A                               
 MM>>>>>>>>>> M v                        !        
 MM           MW:+=\                    F:        
 MM           MWvu  \                    !        
 MM           MW=:<  \v      <<<<<<<<<<<M<        
 MM            W      :\ (|      - ! ,  M         
 MM         VKAWFKW     \h       ! !   x          
 M               uW     +K=WW=xVMM===>> M         
 M.          =<< =W     v  W x   M      M         
                  W+  >=W<  W  >>M      M         
===========>>>>>\f)v    g F<     M      M         
               DDTD:<+ >K   W    M      M         
               D? Dv          F  M      M         
               D>:+KD.>>>>>>W    M      M         
               DD ? Dv                            
                DDD<D=      >>>>>>>>>>>>.F        
                  DDD                   v         
                                        =