Cubology step 5: Solve last layer corners

1: If you can turn the cube so the top layer looks like one of the pictures below (The rectangles represent the facelets on the edge of the top layer. Also, ignore the side cubies), use the corresponding algorithm. Your corners will be solved.

2: If the top layer cannot be matched to one of those patterns, match it to one of these:

Then execute the first algorithm (Solve top corners left). You should be left with one of the patterns in step 1, so do step 1 to solve your corners.