• Start from M_RmRmDmLmLvRmLvUm
• Rotate 90 degrees clockwise the back flap against the front flap and change their hinging side
• Squeze the cube laterally, by reverting from valley to mountain the folding corresponding to the edge of the back of the cube orthogonal to the two closed flaps into a 3D shape
• Turn a flap out 90 degrees into the final shape