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