Half of an animation

I'll try to make this brief, i have an object whose sprite animation makes it look like it is spinning. To save time, i only created half of the spinning animation, the rest of it should be completable by simply playing the animation flipped (think like the goomba from Super mario brothers 1). But i dont know how to do this in the animator. any help?

 

You can use the Animation window to edit the animation and add a new curve that controls the Flip X or Y property of the SpriteRenderer.

 

i love anime