CISRA Puzzle Competition - Hints

3A. Simple Instructions

• Sorry. The title of this puzzle should have been "Not So Simple Instructions". You'll need to plan ahead.
• Keep track of everything because any ambiguities are resolved later.
• Take 27 cubes, numbered 1 to 27.
  Put cube 1 on top of cube 2.
  Put cubes 3 and 4 side by side.
  Put cubes 5 and 6 one on top of the other.
  Put cube 7 on the right side of the cube 1.
  Put cubes 8 and 9 side by side.
  Put cube 10 on the left side of the cube 3.
  Put cube 11 behind cube 7.
  Put cubes 12 and 13 one in front of the other, and put the back one on top of cube 5.
  Put cube 14 on top of cube 8 and under cube 10.
  Put cubes 15 and 16 one on top of the other.
  Put cube 17 on top of cube 13.
  Put cube 18 in front of cube 12 and next to cube 7.
  Put cube 19 behind cube 11.
  Put cube 20 underneath cube 18.
  Put cube 21 next to cube 11.
  Put cube 22 on top of cube 17 and next to cube 9.
  Put cube 23 underneath cube 2, cube 24 underneath cube 8, and cube 25 underneath cube 20.
  Put cube 26 next to cube 19 and on cube 16.
  Put cube 27 between cube 4 and cube 22 in a vertical stack.