<|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:
3.6 3.6 7.2
90 90 90
Y
0.79 0.79 0.20
Zr
0.00 0.00 0.19
Zr
0.79 0.79 0.05
As
0.00 0.00 0.31
Identify the crystal system.<|im_end|>
<|im_start|>assistant
Given the following crystal representation:
3.6 3.6 7.2
90 90 90
Y
0.79 0.79 0.20
Zr
0.00 0.00 0.19
Zr
0.79 0.79 0.05
As
0.00 0.00 0.31
Identify the crystal system.