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a*a+b*a*a+a*b*a*a+b*a*b*a*a+a*b*a*b*a, where a = 0.6 and b = 0.4
a*a+b*a*a+a*b*a*a+b*a*b*a*a+a*b*a*b*a, where a = 0.6 and b = 0.4
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