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quaternion[1/2,1/2,1/2,1/2]**quaternion[1/2,1/2,1/2,1/2]**quaternion[1/2,1/2,1/2,1/2]
quaternion[1/2,1/2,1/2,1/2]**quaternion[1/2,1/2,1/2,1/2]**quaternion[1/2,1/2,1/2,1/2]
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