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