You are given a code:

def main_solution(x):
    return (('ycgumq' + 'boiu') + func_5(x, 'ckkw'))

Can you predict the output of `main_solution("wzuhdwhhv")` 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": "wzuhdwhhv"}, "ref_output": "ycgumqboiuckkwwzuhdwhhv", "ref_code": "def main_solution(x):\n    return (('ycgumq' + 'boiu') + func_5(x, 'ckkw'))", "funcname": "main_solution"}
rule