In the example RY and YB are the edges wrongly oriented.
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The rule of thumb: move RB back and forth
RB Is the edge corrctly positioned and oriented. The first 'Sledgehammer' (U F' U' F) moves it from its position ref to position muf . The second 'Sledgehammer' (F R' F' R) bring it back from muf to ref
Flat rotation ' shows a technique with no impact on corner positions.