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