260901, 260902, 261101, 261102, 261121, 280105 - Squares as carriers or squares as single or multiple line borders. Plain single line squares. Rectangles as carriers or rectangles as single or multiple line borders. Plain single line rectangles. Rectangles that are completely or partially shaded. 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.