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