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