1                             3      4      3 4           3 4           5       4   5        4           4           4               
      
           2 .               2       3       3        3         4       4       4       5       4           4           3             


     
           3 .                       2       3         3         4        4        3 5         5           5         5            


      
           4 .                  2     2        3       4                             
 

    
           5 .                 2     2         3      4                                