Parity: swap both wings
Step 1 / 14
r2: Right inner layer: turn 180° (Written as TR2 in the textbook)
The back edge holds both wings of the front edge, not flipped. The front edge holds both wings of the back edge, flipped.
The last two edges at the front and back of the top. The algorithm moves the corners by one B2; they get solved in the 3x3 stage.
Step 1 of 14: r2. Right inner layer: turn 180°