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