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