You are given a code:

def main_solution(x):
    return func_20(func_15('kphvze'), func_20('qgyb', x))

Can you predict the output of `main_solution("zdlunptkyi")` 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": "zdlunptkyi"}, "ref_output": "\u00abqkz\u00bbg\u00abdpy\u00bbl\u00abbhu\u00bbn\u00abpvt\u00bbk\u00abyzi\u00bb\u00abe\u00bb", "ref_code": "def main_solution(x):\n    return func_20(func_15('kphvze'), func_20('qgyb', x))", "funcname": "main_solution"}
rule