▒           
   ▒·          
    ·          
    ▒·     ▒   
·▒▒▒▒·▒▒▒▒·▒▒▒▒
···············
·······<·······
···············
·▒▒▒▒·▒▒▒▒·▒▒▒▒
    ▒·     ▒   
    ·          
   ▒·          
   ▒