Shows how to switch two top layer edges in a 4x4 Rubik's Cube. This is basically the same as the last parity error I go over in the third step, however, the step 7 move in my 3x3 tutorial must be used as well. This is known as the Allan.
Algorithms Used:
To Switch two Opposite Top Layer Dedges:
r2 U2 r2 (Uu)2 r2 (Uu)2 U2
To rotate 3 Upper Dedges/Edges Counter-CW:
The Allan Move:
L2 U' B F' L2 B' F U' L2
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