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