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