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