<|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:
5.6 5.6 5.6
138 137 61
Li
0.00 0.00 0.24
Be
0.99 0.00 0.59
Sn
0.99 0.00 0.07
Sn
0.00 0.00 0.57
Identify the crystal system.<|im_end|>
<|im_start|>assistant
Given the following crystal representation:
5.6 5.6 5.6
138 137 61
Li
0.00 0.00 0.24
Be
0.99 0.00 0.59
Sn
0.99 0.00 0.07
Sn
0.00 0.00 0.57
Identify the crystal system.