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