You are given a code:

def main_solution(x):
    return func_13(('mkdkxc' + x), '-')

Can you predict the output of `main_solution("wiqepgkqmz")` without writing any code? Please reason and put your final answer in the following json format: {"output": <your output>}, where <your output> should be the final string.
user
{"ref_input": {"x": "wiqepgkqmz"}, "ref_output": "m-k-d-k-x-c-w-i-q-e-p-g-k-q-m-z", "ref_code": "def main_solution(x):\n    return func_13(('mkdkxc' + x), '-')", "funcname": "main_solution"}
rule