α-2, β-0, β-9, β-5, γ-0, γ-9, γ-5, γ-6, δ-1, δ-2, β-8, α-7, β-1, γ-8, γ-3, α-8, α-5, α-4, β-2, β-6, δ-0, β-3, γ-1, γ-2, γ-4, γ-7, β-4, α-0, α-3, β-7, α-1, α-6. Is "α-9" in the previous list? 
Provide no explanation, directly answer with only "Yes." or "No."