2. Back: The back face of the cube is the one opposite the front face.
3. Left: The left face of the cube is the one on the left side of the front face.
4. Right: The right face of the cube is the one on the right side of the front face.
5. Up: The up face of the cube is the one on the top of the front face.
6. Down: The down face of the cube is the one on the bottom of the front face.