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