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