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