You are given a code:

def main_solution(x):
    return (func_15('crwqr') + func_13('tabr', '-'))

Can you predict the output of `main_solution("qgxnpfrm")` 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": "qgxnpfrm"}, "ref_output": "\u00abc\u00bb\u00abr\u00bb\u00abw\u00bb\u00abq\u00bb\u00abr\u00bbt-a-b-r", "ref_code": "def main_solution(x):\n    return (func_15('crwqr') + func_13('tabr', '-'))", "funcname": "main_solution"}
rule