010905, 050325, 200505, 240102, 260106, 260121, 260130, 261502, 261513, 261521, 261701, 261706, 2617 - Atoms or molecular models. Other leaves. Open books. Shields or crests with figurative elements contained therein or superimposed thereon. Semi-circles. Circles that are totally or partially shaded. Four Circles. Plain single or multiple line polygons. More than one polygon. Polygons that are completely or partially shaded. Straight line(s), band(s) or bar(s). Diagonal line(s), band(s) or bar(s). Curved line(s), band(s) or bar(s). 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.