You are given a code:

def main_solution(x):
    return func_20(('hjqx' + x), func_15(x))

Can you predict the output of `main_solution("xxqxdofoj")` 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": "xxqxdofoj"}, "ref_output": "h\u00abjxq\u00bbx\u00abxxx\u00bbq\u00abxqd\u00bbo\u00abfxo\u00bbj\u00abd\u00bb\u00abo\u00bb\u00abf\u00bb\u00abo\u00bb\u00abj\u00bb", "ref_code": "def main_solution(x):\n    return func_20(('hjqx' + x), func_15(x))", "funcname": "main_solution"}
rule