T   H H H H H H   T
 T         T 
  T       T  
   T T T T T T   
H  T   T T   T  H
H  T   T T   T  H
H  T   T T   T  H
H  T   T T   T  H
   T T T T T T   
  T       T  
 T         T 
T   H H H H H H   T
