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