You are given a code:

def main_solution(x):
    return func_9(func_22('cofsy'))

Can you predict the output of `main_solution("rlhx")` 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": "rlhx"}, "ref_output": "cofssfoc", "ref_code": "def main_solution(x):\n    return func_9(func_22('cofsy'))", "funcname": "main_solution"}
rule