You are given a code:

def main_solution(x):
    return func_20(func_9(x), func_15('acgcd'))

Can you predict the output of `main_solution("cbtmixjcgo")` 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": "cbtmixjcgo"}, "ref_output": "c\u00abbat\u00bbm\u00abicx\u00bbj\u00abcgg\u00bbo\u00abocg\u00bbc\u00abjdx\u00bbimtbc", "ref_code": "def main_solution(x):\n    return func_20(func_9(x), func_15('acgcd'))", "funcname": "main_solution"}
rule