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