<|im_start|>user
Please classify each of the following as numbers or letters: 1, A, 5, B, C, D, 99, 88, -2, Z, E, 4<|im_end|>
<|im_start|>assistant
These are numbers: 1, 5, 99, 88, -2, 4.
These are letters: A, B, C, D, Z, E.<|im_end|>
