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