<|im_start|>system
Please reason step by step, and put your final answer within \boxed{}.<|im_end|>
<|im_start|>user
Given the following crystal representation:
4.9 4.9 3.2
90 90 111
Be
0.00 0.00 0.00
Al
0.37 0.98 0.62
Al
0.37 0.02 0.62
Sn
0.74 0.00 0.00
Identify the crystal system.<|im_end|>
<|im_start|>assistant
Given the following crystal representation:
4.9 4.9 3.2
90 90 111
Be
0.00 0.00 0.00
Al
0.37 0.98 0.62
Al
0.37 0.02 0.62
Sn
0.74 0.00 0.00
Identify the crystal system.