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