You are given a code:

def main_solution(x):
    return ('etrqxu' + 'pncbl')

Can you predict the output of `main_solution("yeetqm")` 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": "yeetqm"}, "ref_output": "etrqxupncbl", "ref_code": "def main_solution(x):\n    return ('etrqxu' + 'pncbl')", "funcname": "main_solution"}
rule