You are given a code:

def main_solution(x):
    return ('miqrf' + 'sble')

Can you predict the output of `main_solution("uxfhmatown")` 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": "uxfhmatown"}, "ref_output": "miqrfsble", "ref_code": "def main_solution(x):\n    return ('miqrf' + 'sble')", "funcname": "main_solution"}
rule