+4E edg keyhole
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Adding 4 E Edges using keyhole, or +4E edg keyhole refers to the substep of some methods that solves the F2L except one corner without counting the 1st Layer-1C part.
Holding the cross on D, place E-layer edges in their position in 3 moves after making a D, D2 or D' setup, not to destroy the 3 corners which are already solved.
