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