Question 842971
{{{drawing(300,300,-5,5,-5,5,grid(1),
blue(circle(-1,2,0.15)),
blue(circle(-1,2,0.2)),
blue(circle(-1,2,0.1)),
blue(circle(-1,2,0.05)),
blue(circle(-1,2,0.02)),
circle(-1,1,0.2),
circle(-1,3,0.2),
blue(line(-8,3,-1,3)),
blue(line(8,1,-1,1)))}}}