52!2!13!\frac{52 !}{2 ! 13 !}2!13!52!
52!(13!)4\frac{52 !}{(13 !)^{4}}(13!)452!
52!2!(13!)4\frac{52 !}{2 !(13 !)^{4}}2!(13!)452!
52!(4!)(13!)\frac{52 !}{(4 !)(13 !)}(4!)(13!)52!