Step-5
Permuting yellow edges

Try to make 2 edges match with their center.
If they are adjacent to each other, then place them at the back and right face.

If they are across from each other, then place them in any way.

Now, do this algorithm(which is called the Sune):
R U R’ U R U2 R’ U

If you still only have 2 edges that can be matched, then match the previous case and do the algorithm again.

Now, your cube should look like this: