You are given a code:

def main_solution(x):
    return func_9((x + 'fcdd'))

Can you predict the output of `main_solution("iimfacsk")` 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": "iimfacsk"}, "ref_output": "iimfacskfcddddcfkscafmii", "ref_code": "def main_solution(x):\n    return func_9((x + 'fcdd'))", "funcname": "main_solution"}
rule