Reusing sprite frames?

After doing the rogue-like tutorial I've started making a simple practice 2D game. I'm repeating the procedures there to create sprite-based characters and their animations, but I can't figure out how to re-use certain sprites for the animations themselves (in the .anim resources.) For example I'd like the walking sprites to cycle in a specific order so I don't have to create extra images. What do?

 

Maybe this tutorial will help you:
https://unity3d.com/learn/tutorials/modules/beginner/animation/animation-view?playlist=17099

 

Thanks, but not quite. I've created animations by dragging the sprites I want used into an empty Game Object (an .anim is then generated.) I'd like to know how to edit it specifically, so I can, say, have certain sprites be repeated in a walking animation.

 

I see it now, thanks everyone.