7 0.4765625 0.5302734375 0.849609375 0.83984375
15 0.283203125 0.3173828125 0.349609375 0.37890625
15 0.8779296875 0.380859375 0.244140625 0.36328125
15 0.9287109375 0.36328125 0.142578125 0.4765625