asp.net - ISS url rewriting pattern -

i want create url rewriting pattern in iss. want when url has %2c% convert %2c% " , ".

input :www.example.com/videos/video1%2c%video2%2c%video3%2c%video4%2c% output:www.example.com/videos/video1,video2,video3,vide4

how can that. in picture follow. example of url rewriting screen in iis.