You are given a code:

def main_solution(x):
    return func_20(func_15('apiik'), func_1('hhclnj', 2))

Can you predict the output of `main_solution("ovccejo")` 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": "ovccejo"}, "ref_output": "\u00abhah\u00bbc\u00ablpn\u00bbj\u00abhih\u00bbc\u00ablin\u00bbj\u00abk\u00bb", "ref_code": "def main_solution(x):\n    return func_20(func_15('apiik'), func_1('hhclnj', 2))", "funcname": "main_solution"}
rule