You are given a code:

def main_solution(x):
    return func_20(func_15(x), func_3('cgak'))

Can you predict the output of `main_solution("sxvr")` 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": "sxvr"}, "ref_output": "\u00abasc\u00bbg\u00abkx\u00bb\u00abv\u00bb\u00abr\u00bb", "ref_code": "def main_solution(x):\n    return func_20(func_15(x), func_3('cgak'))", "funcname": "main_solution"}
rule