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