eeeddccccccccoee                      
                 eocooxccoecc         ccce                  
               ocoxcdccoeococcdxxxccccce  cce               
             ococcccddccxe            occcdocee             
           ocxxcocox                    ccccooce            
          oooxec o   doooe               ed ceecx           
         oeooocexe  eeeecce                ce ex x          
        ooxeeccx    cxeedocde               ce ex x         
        xxxxxcoe      ceeceeec               eo xxco        
       exxcxeox       ecxececoc               x xxex        
       xec x e        cceoe  o                xoexox        
       xexex e       ececo  oc                coxxxx        
       ce exe x     oxoxe exe  odddcddccdccoe ecxxex        
        o xxxcx   eoooce dc   exxdcccccccexcxoxexecx        
        eocecocx    xxcdoc      cdecxccddccccoexdxoe        
         ecxox ce                           oeeeceo         
          ecxxeeece                       eoeooo o          
           eoxxxeoeee                   eccocoxoc           
            cocxxdocdccee            eoccxcoxeoe            
              coecxeoocxccccceeodcccxeccxccecc              
                ccexxee e ccxcdcccccccccecce                
                   eeocccxccoeeeeeedcccce                   
                         e ccccccce