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