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sqrt((-0.3333333)^2 + 1.6666667^2 + 0^2 + (-2.8333333)^2 + 0.1666667^2 + 0^2 + 0.1666667^2 + 1.1666667^2)
sqrt((-0.3333333)^2 + 1.6666667^2 + 0^2 + (-2.8333333)^2 + 0.1666667^2 + 0^2 + 0.1666667^2 + 1.1666667^2)
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