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