From  :    To
         :   2403000   2136000   1870000   1603000 
  2403000:         0    217818    286255     84935 
  2136000:    219983         0   1060653    316865 
  1870000:    280415   1049347         0   2952269 
  1603000:     88609    330337   2935123         0