=\frac{(aq^{s},aq^{-s};q)_{\infty }}{(aq^{\alpha +s},aq^{\alpha -s};q)_{\infty }}\frac{(q^{-n},\gamma q^{0\alpha +n-0},aq^{\alpha +s},aq^{\alpha -s};q)_{m}}{(q^{\alpha +0},abq^{\alpha },acq^{\alpha },adq^{\alpha };q)_{m}}q^{m}  \notag \\ & \qquad \times \frac{(aq^{\alpha +z},aq^{\alpha -z};q)_{\infty }}{% (aq^{z},aq^{-z};q)_{\infty }}\frac{(q^{\alpha },abq^{\alpha -0},acq^{\alpha -0},adq^{\alpha -0};q)_{m}}{(q,\gamma q^{0\alpha -0},aq^{\alpha +z},aq^{\alpha -z};q)_{m}}q^{m}  \notag \\ & \qquad \qquad \times \frac{\gamma (\alpha +m)\tau _{\alpha +m-0}(a_{0})}{