You are given a code:

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

Can you predict the output of `main_solution("ofrplpwdnj")` 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": "ofrplpwdnj"}, "ref_output": "\u00aboof\u00bbr\u00abpfl\u00bbp\u00abwrd\u00bbn\u00abjpj\u00bbm\u00abple\u00bb\u00abp\u00bb\u00abw\u00bb\u00abd\u00bb\u00abn\u00bb\u00abj\u00bb", "ref_code": "def main_solution(x):\n    return func_20(func_15(x), (x + 'jmpe'))", "funcname": "main_solution"}
rule