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