ϕ34⁡(q-n,a,b,cd,e,f;q,q)=(e/a,f/a;q)n(e,f;q)n⁢an⁢ϕ34⁡(q-n,a,d/b,d/cd,a⁢q1-n/e,a⁢q1-n/f;q,q)=(a,e⁢f/(a⁢b),e⁢f/(a⁢c);q)n(e,f,e⁢f/(a⁢b⁢c);q)n⁢ϕ34⁡(q-n,e/a,f/a,e⁢f/(a⁢b⁢c)e⁢f/(a⁢b),e⁢f/(a⁢c),q1-n/a;q,q).