∆                                        
     ▒▒▒▒▒▒▒▒▒▒                          
     ▒<·≈≈≈≈≈P▒                          
     ▒▒▒··≈≈≈≈▒                          
      ▒≈·≈≈≈≈P▒                          
      ▒·≈≈≈≈≈≈▒                          
      ▒P·≈≈≈≈≈▒                          
      ▒▒·≈≈≈≈P▒                          
     ▒▒·≈≈≈≈≈P▒                          
     ▒·≈≈≈≈≈P≈▒                          
     ▒≈·≈≈≈≈PP▒                          
     ▒·≈≈≈≈PP≈▒                          
     ▒▒·≈≈≈≈≈≈▒                          
      ▒▒·≈≈≈≈≈▒                          
      ▒▒·≈≈≈≈≈▒                          
 ∆   ▒▒·≈≈≈≈PP▒                          
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         ▒·▒▒▒····▒▒▒▒▒     ▒·▒·▒·▒      
         ▒·▒▒···>▒▒         ▒·▒·▒·▒      
         ▒·······▒▒▒▒▒      ▒·▒·▒·▒      
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        ························▒▒▒      
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                ▒▒···▒▒                  
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