Na     R U R' U R U R' F' R U R' U' R' F R2 U' R' U2 R U' R'

Na
Diagonal corner swaps

Alternate Algorithms

Setup

R U R' U R U R' F' R U R' U' R' F R2 U' R' U2 R U' R'

Recognition

Two 1x2 blocks are solved diagonally across from each other. The 1x2 blocks appear to be pointing in a clockwise direction. Two corners and edges need to be swapped diagonally.