c1 = circle(x=0, y=50, r=50) c2 = circle(x=0, y=100, r=100) c3 = circle(x=0, y=150, r=150) c4 = circle(x=0, y=-50, r=50) c5 = circle(x=0, y=-100, r=100) c6 = circle(x=0, y=-150, r=150) c7 = circle(x=50, y=0, r=50) c8 = circle(x=100, y=0, r=100 ) c9 = circle(x=150, y=0, r=150) c10 = circle(x=-50, y=0, r=50) c11 = circle(x=-100, y=0, r=100 ) c12 = circle(x=-150, y=0, r=150) c13 = circle(x=0, y=0, r=125) show(c1, c2, c3, c4, c5, c6 ,c7 ,c8 ,c9 ,c10 ,c11 ,c12 ,c13 )