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