You are given a code:

def main_solution(x):
    return func_20(('oqsu' + x), func_15(x))

Can you predict the output of `main_solution("cljcmwbwdu")` 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": "cljcmwbwdu"}, "ref_output": "o\u00abqcs\u00bbu\u00abcll\u00bbj\u00abcjm\u00bbw\u00abbcw\u00bbd\u00abum\u00bb\u00abw\u00bb\u00abb\u00bb\u00abw\u00bb\u00abd\u00bb\u00abu\u00bb", "ref_code": "def main_solution(x):\n    return func_20(('oqsu' + x), func_15(x))", "funcname": "main_solution"}
rule