You are given a code:

def main_solution(x):
    return func_20(func_15('lfzbjy'), func_20('qflyx', x))

Can you predict the output of `main_solution("oypoyl")` 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": "oypoyl"}, "ref_output": "\u00abqlo\u00bbf\u00abyfl\u00bbp\u00abyzo\u00bbx\u00abybl\u00bb\u00abj\u00bb\u00aby\u00bb", "ref_code": "def main_solution(x):\n    return func_20(func_15('lfzbjy'), func_20('qflyx', x))", "funcname": "main_solution"}
rule