ϕ78⁡(-c,q⁢(-c)12,-q⁢(-c)12,a,q/a,c,-d,-q/d(-c)12,-(-c)12,-c⁢q/a,-a⁢c,-q,c⁢q/d,c⁢d;q,c)=(-c,-c⁢q;q)∞⁢(a⁢c⁢d,a⁢c⁢q/d,c⁢d⁢q/a,c⁢q2/(a⁢d);q2)∞(c⁢d,c⁢q/d,-a⁢c,-c⁢q/a;q)∞.