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