You are given a code:

def main_solution(x):
    return func_20(func_9('zwhns'), func_5('lbbc', 'lmen'))

Can you predict the output of `main_solution("tdva")` 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": "tdva"}, "ref_output": "zlwmhennslsbnbhcwz", "ref_code": "def main_solution(x):\n    return func_20(func_9('zwhns'), func_5('lbbc', 'lmen'))", "funcname": "main_solution"}
rule