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