Well, at this stage we proceed to make the edges formerly located in the top match well with the colors of adjacent faces.
turning the top face (Ar) we see that edges match the color of his face. With luck will have been accommodated in the previous step. Otherwise 2 situations may occur:
Case 1: You ndremos 2 edges too, but these are one after the other. Before proceeding with the algorithm must locate the hub in a specific way. As we said, we have 2 edges in place. Then we match them with its centerpiece turning the top face ( Ar) and then turn around hub 2 so that these edges are facing backwards and the right.
Case 2: We have 2 edges that are correctly located opposite the shaft and the other two reversed.
Whatever the case may be resolved by using the same algorithm, except that if we have the case 2 we make the transition to reach the case 1 and then repeat.
The algorithm is as follows:
-Dei De-Ar-Ar-De-Ar-Ar-Dei
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