Guess the missing item from this list: η-2, γ-6, γ-9, ε-1, β-6, ε-9, ζ-5, ζ-2, δ-2, γ-2, ζ-3, γ-7, β-4, γ-4, ε-2, α-5, ζ-4, η-1, ζ-1, δ-3, δ-5, ε-5, η-4, β-1, ζ-6, ζ-0, α-6, α-3, γ-8, η-3, α-9, δ-9, δ-1, α-2, ζ-7, β-0, γ-3, ε-3, δ-6, α-7, γ-0, α-1, δ-8, γ-5, α-8, η-0, ζ-9, β-8, ε-6, ζ-8, ε-8, ε-4, α-4, γ-1, δ-4, β-7, β-9, ε-0, ε-7, δ-7, β-3, α-0, δ-0, β-2.
Directly answer with only one item. Item format should match the list format. Provide no explanation. Answer format: "{item}."