Step 1

Start in stack 2 5 RED D BLUE O

Step 2

Red 7 moves deep red 6 ready for under

Step 3

Red 6 picks up blue 7 cutting under

Step 4

Blue 7 clears out back into stack

Step 5

Red 7 picks up deep Red 6 picks up under

Step 6

Red 7 and 6 switch

Step 7