B d a x

B d a xB d a xB d a xB d a x
B d a xB d a xB d a xB d a xB d a xB d a xB d a xB d a x
B d a xB d a xB d a xB d a xB d a xB d a xB d a xB d a xB d a xB d a xB d a xB d a x
B d a xB d a xB d a xB d a xB d a xB d a xB d a xB d a xB d a xB d a xB d a xB d a xB d a xB d a xB d a xB d a x
B d a xB d a xB d a x