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