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