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