All possible scrambles of the 1x2x3 Rubik's cube. There are 48 combinations, and we can demonstrate how.
Consider just the top face of the puzzle. With only 180° turns, we can move the top, left, right, or bottom parts. To preserve orientation, let's say top and bottom moves are identical. This means the lower middle cubie will be in a fixed position.
For the 5 cubies from the top face, there are only 12 possible orientations. For the red/orange side, since one of them is in a fixed position, we get only 4 possibilities. Red/Red/Red, Red/Red/Orange, Orange/Red/Red, Orange/Red/Orange.
For certain arrangements, the pattern is different and it depends on the green/blue side. Orientation of the puzzle is disregarded, so don't just rotate the puzzle and say "It isn't unique", OK?