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