You are given a code:

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

Can you predict the output of `main_solution("xcwrrh")` 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": "xcwrrh"}, "ref_output": "xcwrrhnuhtosz-f-e-g", "ref_code": "def main_solution(x):\n    return ((x + 'nuhtos') + func_13('zfeg', '-'))", "funcname": "main_solution"}
rule