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