<|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:
10.0 10.0 10.0
18 18 18
Y
0.00 0.00 0.00
Hf
0.00 0.00 0.58
Hf
0.00 0.00 0.97
W
0.00 0.00 0.77
Identify the crystal system.<|im_end|>
<|im_start|>assistant
Given the following crystal representation:
10.0 10.0 10.0
18 18 18
Y
0.00 0.00 0.00
Hf
0.00 0.00 0.58
Hf
0.00 0.00 0.97
W
0.00 0.00 0.77
Identify the crystal system.