<|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:
6.4 6.4 6.4
148 142 49
K
0.00 0.05 0.86
K
0.74 0.00 0.91
Tc
0.00 0.00 0.00
Ru
0.00 0.00 0.77
Identify the crystal system.<|im_end|>
<|im_start|>assistant
Given the following crystal representation:
6.4 6.4 6.4
148 142 49
K
0.00 0.05 0.86
K
0.74 0.00 0.91
Tc
0.00 0.00 0.00
Ru
0.00 0.00 0.77
Identify the crystal system.