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