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name of shape z=-1/2 sqrt(64 - 20 x^2 + x^4 - 96 y + 12 x^2 y + 32 y^2)
name of shape z=-1/2 sqrt(64 - 20 x^2 + x^4 - 96 y + 12 x^2 y + 32 y^2)
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