xxxxxxx  xxxxxx  xxxxxx  xxxxxxx
x222222                  222222x
x222222                  222222x
x222222   e         e    222222x
x222222                  222222x
x222222                  222222x
x222222                  222222x
                           s    
                                
x222222     PPPPPP       222222x
x222222     pppppp       222222x
x222222     pppppp       222222x
x222222     pppppp       222222x
x222222                  222222x
x222222                  222222x
           s                    
                                
x222222                  222222x
x222222                  222222x
x222222            e     222222x
x222222                  222222x
x222222                  222222x
x222222                  222222x
   s                            
                                
x222222                  222222x
x222222                  222222x
x222222    e             222222x
x222222                  222222x
x222222                  222222x
x222222                  222222x
xxxxxxx  xxxxxx  xxxxxx  xxxxxxx