Cubology step 3: Solve center layer sides

Note: "Sides" here refers to side cubies, not to the sides of the center layer, which are center cubies.

1: Find a target cubie (a side cubie with no facelets the color of the top layer)

2: If it is in the top layer, rotate the top layer until it lines up with one of the second layer middles. It should make a shape like an upside-down T. Use one of these algorithms:

 3: If it is in the right place, but flipped use this:

4: If it is in the second layer, but in the wrong place use one of the step 2 algorithms to knock it out.

5: Repeat steps 1 thru 4 until all the second layer sides are solved.