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