You are given a code:

def main_solution(x):
    return func_20(func_15('kxvywp'), func_5(x, 'wc'))

Can you predict the output of `main_solution("uzbkr")` 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": "uzbkr"}, "ref_output": "\u00abwkc\u00bbu\u00abzxb\u00bbk\u00abrv\u00bb\u00aby\u00bb\u00abw\u00bb\u00abp\u00bb", "ref_code": "def main_solution(x):\n    return func_20(func_15('kxvywp'), func_5(x, 'wc'))", "funcname": "main_solution"}
rule