You are given a code:

def main_solution(x):
    return func_5('jpyh', 'lur')

Can you predict the output of `main_solution("uctnlum")` 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": "uctnlum"}, "ref_output": "lurjpyh", "ref_code": "def main_solution(x):\n    return func_5('jpyh', 'lur')", "funcname": "main_solution"}
rule