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