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