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