Full column 4
Step 1 / 7
r: Right inner layer: turn 90°, front face goes up (Written as TR in the textbook)
The top has red pieces in its back-left, middle-left and front-right spots. The front's right column is all green.
Green on top, red at the front. The algorithm has 2 r ... r' groups.
Step 1 of 7: r. Right inner layer: turn 90°, front face goes up