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