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