bear storage box [1 layer +1 high cover] sky blue bear storage box [1 layer +1 high cover] lime yellow bear storage box [1 layer +1 high cover] pink bear storage box [1 layer +1 high cover] beige bear storage box [2 layers +1 high cover] sky blue bear storage box [2 layers +1 high cover] lime yellow bear storage box [2 layers +1 high cover] pink bear storage box [2 layers +1 high cover] beige bear storage box [3 layers +1 high cover] sky blue bear storage box [3 layers +1 high cover] lime yellow bear storage box [3 layers +1 high cover] pink bear storage box [3 layers +1 high cover] beige bear storage box [4 layers +1 high cover] sky blue bear storage box [4 layers +1 high cover] lime yellow bear storage box [4 layers +1 high cover] pink bear storage box [4 layers +1 high cover] beige

as shown in the figure