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{x^2+y^2=1,x^2+y^2=(1/4)^2,(x-3/10)^2+(y-9/40)^2=(1/8)^2, (x-3/5)^2+(y-9/20)^2=(1/4)^2, x^2+(y-5/8)^2=(3/8)^2,y=0,x=0}
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