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