You are given a code:

def main_solution(x):
    return (func_11('hwzxkl', 4) + func_15('xzdf'))

Can you predict the output of `main_solution("epl")` 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": "epl"}, "ref_output": "ladbop\u00abx\u00bb\u00abz\u00bb\u00abd\u00bb\u00abf\u00bb", "ref_code": "def main_solution(x):\n    return (func_11('hwzxkl', 4) + func_15('xzdf'))", "funcname": "main_solution"}
rule