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