010701, 260102, 260108, 260118, 260503, 280105 - Globes with outlines of continents. Plain single line circles. Letters, numerals or punctuation forming or bordering the perimeter of a circle. Three or more concentric circles. Incomplete triangles (must have two angles). 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.