In how many ways can 5 different keys be placed on a keychain?  (Two arrangements are considered the same if one can be rotated or flipped to be identical to the other.)
<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
In how many ways can 5 different keys be placed on a keychain?  (Two arrangements are considered the same if one can be rotated or flipped to be identical to the other.)
Please reason step by step, and put your final answer within \boxed{{}}.<|im_end|>
<|im_start|>assistant

user
12
In how many ways can 5 different keys be placed on a keychain?  (Two arrangements are considered the same if one can be rotated or flipped to be identical to the other.)
train