You are given a code:

def main_solution(x):
    return ('ozj' + 'ctvml')

Can you predict the output of `main_solution("cmqvqjl")` 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": "cmqvqjl"}, "ref_output": "ozjctvml", "ref_code": "def main_solution(x):\n    return ('ozj' + 'ctvml')", "funcname": "main_solution"}
rule