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