You are given a code:

def main_solution(x):
    return ('xpslwj' + 'qjkwsw')

Can you predict the output of `main_solution("cvr")` 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": "cvr"}, "ref_output": "xpslwjqjkwsw", "ref_code": "def main_solution(x):\n    return ('xpslwj' + 'qjkwsw')", "funcname": "main_solution"}
rule