You are given a code:

def main_solution(x):
    return func_20(func_15('zej'), ('egehi' + 'tisllj'))

Can you predict the output of `main_solution("dwr")` 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": "dwr"}, "ref_output": "\u00abezg\u00bbe\u00abhei\u00bbt\u00abijs\u00bbllj", "ref_code": "def main_solution(x):\n    return func_20(func_15('zej'), ('egehi' + 'tisllj'))", "funcname": "main_solution"}
rule