You are given a code:

def main_solution(x):
    return ('rrnsp' + 'oup')

Can you predict the output of `main_solution("yuwdmthyrs")` 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": "yuwdmthyrs"}, "ref_output": "rrnspoup", "ref_code": "def main_solution(x):\n    return ('rrnsp' + 'oup')", "funcname": "main_solution"}
rule