Corners are opposite and always C23, edges are adjacent (2 cases) or opposite (2 cases). The 2 other adjacent edge cases can be obtained by an Y2 rotation.
swap opposite C3-C2, adjacent C1 centered E1-E3
y2 R' U R' d' R' F' R2 U' R' U R' F R F y |
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swap opposite C3-C2, adjacent C3 centered E3-E4
y2 F R U' R' U' R U R' F' R U R' U' R' F R F' y2 |
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swap opposite C3-C2, opposite vertical E2-E3
L U' R U2 L' U R' L U' R U2 L' U R' U |
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swap opposite C3-C2, opposite horizontal E1-E4
y R' U L' U2 R U' L R' U L' U2 R U' L U' y' |
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