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#Armillary spheres, planetaria, astronomic orbits, atomic models, molecular models #Surfaces or backgrounds covered with repeated geometrical figures, figurative elements or inscriptions #Letters or numerals forming geometrical figures, written or typographical matter in perspective #Letters or numerals representing a human being, an animal, a plant, a heavenly body, a natural phenomenon or an object #Surfaces or backgrounds covered with repeated geometrical figures or designs #Letters or numerals representing a human being or a part of the human body, an animal or a part of an animal's body, a plant, a heavenly body, a natural phenomenon or an object #One letter