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