You are given a code:

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

Can you predict the output of `main_solution("bbdzzmj")` 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": "bbdzzmj"}, "ref_output": "\u00abwbn\u00bbc\u00abmbb\u00bbb\u00abddz\u00bbz\u00abmzj\u00bb\u00abz\u00bb\u00abm\u00bb\u00abj\u00bb", "ref_code": "def main_solution(x):\n    return func_20(func_15(x), ('wncm' + x))", "funcname": "main_solution"}
rule