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