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