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