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