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