You are given a code:

def main_solution(x):
    return func_20(func_20('gieb', x), func_15('jnrj'))

Can you predict the output of `main_solution("atscko")` 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": "atscko"}, "ref_output": "g\u00abaji\u00bbt\u00abens\u00bbb\u00abcrk\u00bbo\u00abj\u00bb", "ref_code": "def main_solution(x):\n    return func_20(func_20('gieb', x), func_15('jnrj'))", "funcname": "main_solution"}
rule