You are given a code:

def main_solution(x):
    return (func_15('qvo') + func_13('bshg', '_'))

Can you predict the output of `main_solution("muehvp")` 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": "muehvp"}, "ref_output": "\u00abq\u00bb\u00abv\u00bb\u00abo\u00bbb_s_h_g", "ref_code": "def main_solution(x):\n    return (func_15('qvo') + func_13('bshg', '_'))", "funcname": "main_solution"}
rule