You are given a code:

def main_solution(x):
    return ('kdsbib' + 'wjeb')

Can you predict the output of `main_solution("tkcmdjwdj")` 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": "tkcmdjwdj"}, "ref_output": "kdsbibwjeb", "ref_code": "def main_solution(x):\n    return ('kdsbib' + 'wjeb')", "funcname": "main_solution"}
rule