You are given a code:

def main_solution(x):
    return (func_1('ngqopi', 2) + func_15('xve'))

Can you predict the output of `main_solution("mhjmqcwzx")` 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": "mhjmqcwzx"}, "ref_output": "ngqopingqopi\u00abx\u00bb\u00abv\u00bb\u00abe\u00bb", "ref_code": "def main_solution(x):\n    return (func_1('ngqopi', 2) + func_15('xve'))", "funcname": "main_solution"}
rule