7 0.250000 0.593750 0.156250 0.375000
4 0.390625 0.593750 0.156250 0.437500
8 0.554688 0.593750 0.140625 0.375000
5 0.695312 0.609375 0.140625 0.406250
3 0.835938 0.578125 0.171875 0.406250
