You are given a code:

def main_solution(x):
    return func_20(func_15(x), func_20(x, 'mygdz'))

Can you predict the output of `main_solution("mcxosjycc")` 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": "mcxosjycc"}, "ref_output": "\u00abmmm\u00bbc\u00abycx\u00bbg\u00aboxd\u00bbs\u00abzoj\u00bby\u00abcsc\u00bb\u00abj\u00bb\u00aby\u00bb\u00abc\u00bb\u00abc\u00bb", "ref_code": "def main_solution(x):\n    return func_20(func_15(x), func_20(x, 'mygdz'))", "funcname": "main_solution"}
rule