
If we label the colors of centers belonging to two unsolved layers A and B, then the wrongly oriented edge is an edge which fulfills at least one of these conditions:
1. if an edge with A-sticker finds itself in a layer with A-center, then its A-sticker faces away from the A-center
2. if an edge with B-sticker finds itself in a layer with A-center, then this B-sticker faces in the same direction as this A-center
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