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