w2⁢(z)=ⅇ(a-c+1)⁢π⁢ⅈ⁢Γ⁡(2-c)⁢Γ⁡(b)Γ⁡(a+b-c+1)⁢Γ⁡(1-a)⁢w3⁢(z)+ⅇ(a-c)⁢π⁢ⅈ⁢Γ⁡(2-c)⁢Γ⁡(b)Γ⁡(b-a+1)⁢Γ⁡(a-c+1)⁢w6⁢(z).