You are given a code:

def main_solution(x):
    return (('beuerl' + 'tof') + func_15('rzn'))

Can you predict the output of `main_solution("rmq")` 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": "rmq"}, "ref_output": "beuerltof\u00abr\u00bb\u00abz\u00bb\u00abn\u00bb", "ref_code": "def main_solution(x):\n    return (('beuerl' + 'tof') + func_15('rzn'))", "funcname": "main_solution"}
rule