CHECK: bucket (150, 50)'s list of points:
CHECK-NEXT: (0.751041,0.505377)
CHECK-NEXT: (0.750647,0.505272)
CHECK-NEXT: (0.752243,0.509601)
CHECK-NEXT: (0.750937,0.503519)
CHECK-NEXT: (0.753879,0.506217)
CHECK-NEXT: (0.754956,0.501953)
CHECK-NEXT: (0.754439,0.502353)
CHECK-NEXT: (0.754128,0.501410)
CHECK-NEXT: (0.750917,0.502195)
CHECK-NEXT: (0.754024,0.507150)
CHECK-NEXT: (0.750565,0.502896)
CHECK-NEXT: (0.753444,0.509374)
CHECK-NEXT: (0.754874,0.506500)
CHECK-NEXT: (0.754646,0.508721)
CHECK-NEXT: (0.753527,0.504378)
CHECK-NEXT: (0.754563,0.502366)
CHECK-NEXT: (0.751227,0.502014)
CHECK-NEXT: (0.753009,0.508329)
CHECK-NEXT: (0.752284,0.500607)
CHECK-NEXT: (0.753341,0.503853)
CHECK-NEXT: (0.751787,0.501364)
CHECK-NEXT: (0.750171,0.500588)
CHECK-NEXT: (0.752243,0.501621)
CHECK-NEXT: (0.752056,0.509570)
CHECK-NEXT: (0.752263,0.507172)
CHECK-NEXT: (0.754024,0.501935)
CHECK-NEXT: (0.751538,0.500686)
CHECK-NEXT: (0.754024,0.508004)
CHECK-NEXT: (0.750358,0.506688)
CHECK-NEXT: (0.751083,0.505733)
CHECK-NEXT: (0.750150,0.505805)
CHECK-NEXT: (0.750585,0.505232)
CHECK-NEXT: (0.753838,0.508040)
CHECK-NEXT: (0.750461,0.501308)
CHECK-NEXT: (0.753527,0.501546)
CHECK-NEXT: (0.751145,0.508224)
CHECK-NEXT: (0.751953,0.506566)
CHECK-NEXT: (0.750378,0.502955)
CHECK-NEXT: (0.751704,0.507102)
CHECK-NEXT: (0.754646,0.502674)
CHECK-NEXT: (0.750772,0.501464)
CHECK-NEXT: (0.752325,0.502761)
CHECK-NEXT: (0.752408,0.502305)
CHECK-NEXT: (0.751000,0.508639)
CHECK-NEXT: (0.754252,0.506525)
CHECK-NEXT: (0.753175,0.504877)
CHECK-NEXT: (0.753071,0.502682)
CHECK-NEXT: (0.750109,0.503627)
CHECK-NEXT: (0.754936,0.506406)
CHECK-NEXT: (0.754521,0.500953)
CHECK-NEXT: (0.753941,0.509584)
CHECK-NEXT: (0.754915,0.504699)
CHECK-NEXT: (0.751476,0.509525)
CHECK-NEXT: (0.752823,0.507129)