dddddddd bbbbbbbb                                                          
                               d::::::d b::::::b             kkkkkkkk                                     
                               d::::::d b::::::b             k::::::k                                     
                               d::::::d b::::::b             k::::::k                                     
                               d:::::d   b:::::b             k::::::k                                     
 zzzzzzzzzzzzzzzzz     ddddddddd:::::d   b:::::bbbbbbbbb      k:::::k    kkkkkkk yyyyyyy           yyyyyyy
 z:::::::::::::::z   dd::::::::::::::d   b::::::::::::::bb    k:::::k   k:::::k   y:::::y         y:::::y 
 z::::::::::::::z   d::::::::::::::::d   b::::::::::::::::b   k:::::k  k:::::k     y:::::y       y:::::y  
 zzzzzzzz::::::z   d:::::::ddddd:::::d   b:::::bbbbb:::::::b  k:::::k k:::::k       y:::::y     y:::::y   
       z::::::z    d::::::d    d:::::d   b:::::b    b::::::b  k::::::k:::::k         y:::::y   y:::::y    
      z::::::z     d:::::d     d:::::d   b:::::b     b:::::b  k:::::::::::k           y:::::y y:::::y     
     z::::::z      d:::::d     d:::::d   b:::::b     b:::::b  k:::::::::::k            y:::::y:::::y      
    z::::::z       d:::::d     d:::::d   b:::::b     b:::::b  k::::::k:::::k            y:::::::::y       
   z::::::zzzzzzzz d::::::ddddd::::::dd  b:::::bbbbbb::::::b k::::::k k:::::k            y:::::::y        
  z::::::::::::::z  d:::::::::::::::::d  b::::::::::::::::b  k::::::k  k:::::k            y:::::y         
 z:::::::::::::::z   d:::::::::ddd::::d  b:::::::::::::::b   k::::::k   k:::::k          y:::::y          
 zzzzzzzzzzzzzzzzz    ddddddddd   ddddd  bbbbbbbbbbbbbbbb    kkkkkkkk    kkkkkkk        y:::::y           
                                                                                       y:::::y            
                                                                                      y:::::y             
                                                                                     y:::::y              
                                                                                    y:::::y               
                                                                                   yyyyyyy