240325, 260102, 260115, 261509, 261520, 261521, 261525, 280105 - Other emblems and insignia. Plain single line circles. Three circles. Polygons made of geometric figures, objects, humans, plants or animals. Polygons inside another polygon. Polygons that are completely or partially shaded. Polygons with one or more curved sides. Inscriptions in Greek characters, including the following: Α α Β β Γ γ Δ δ Ε ε Ζ ζ Η η Θ θ Ι ι Κ κ Λ λ Μ μ Ν ν Ξ ξ Ο ο Π π Ρ ρ ς Σ σ Τ τ Υ υ Φ φ Χ χ Ψ ψ Ω ω.