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