p1 = Point(0,0,0)
p2 = Point(0,1000,0)
p3 = Point(0,2000,0)
p4 = Point(0,3000,0)
p5 = Point(1000,0,0)
p6 = Point(1000,1000,0)
p7 = Point(1000,2000,0)
p8 = Point(1000,3000,0)
p9 = Point(2000,0,0)
p10 = Point(2000,1000,0)
p11 = Point(2000,2000,0)
p12 = Point(2000,3000,0)
p13 = Point(3000,0,0)
p14 = Point(3000,1000,0)
p15 = Point(3000,2000,0)
p16 = Point(3000,3000,0)
lst = List(p1, p2, p3, p4, p5, p6, p7, p8, p9, p10, p11, p12, p13, p14, p15, p16)
cols = Column(lst,300,30,30)