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