Complete 6PAIRs

Goal

Stage one

A

B

C

D

Select the option on the left that is the same as the twist orientation of your Hub Corner and see which edges to match, and move the positions of the edges to be matched to the figure of the previously selected option without changing the twist orientation and position of the corner in the end.
Stage two
If the option A or B is selected, use move sequence R' U', if the option C or D is selected, use U' R' to complete the 6PAIRs as shown on the right.

Moves that does not change the twist orientations and positions of corners in the end

Classification of positions of two edges without breaking Parallel PAIR moves

Here we restrict the discussion of so-called edges that are neither on EOEdge nor on Base 4PAIRs

If the position of the two edges belongs to any of the three shown on the right, it is called "Horizontal Opposite".
If it does not belong to any of the three shown on the right, it is simply referred to as "Non-Horizontal Opposite".

Any two that belong to the same Horizontal Opposite or belong to the same Non-Horizontal Opposite can be transformed into each other by the move that does not break any Parallel PAIR in the figure.
However, if one belongs to Horizontal Opposite and the other belongs to Non-Horizontal Opposite, can not be transformed into each other by the move that does not break any Parallel PAIR in the figure.

The move that does not break any Parallel PAIR in the figure will not change the twist orientation and position of corners in the end.


Transition between Horizontal Opposite and Non-Horizontal Opposite

Here is a move that does not change the twist orientations and positions of corners in the end, but breaks a Parallel PAIR, such as shown on the left, to transform between Horizontal Opposite and Non-Horizontal Opposite.

Any Horizontal Opposite do the move as animation on the left will move to Non-Horizontal Opposite
However, under the move as animation on the left, only 3 of Non-Horizontal Opposite shown on the right will move to Horizontal Opposite.


Complete the goal

If the selected goal is the A or B option, use the above method to move the two edges matched in the option into Non-Horizontal Opposite; if you select the C or D option, use the above method to move the two edges matched in the option into Horizontal Opposite, then both can complete stage one of the goal using only moves that do not break any Parallel PAIR.