You are given a code:

def main_solution(x):
    return func_20(('twg' + 'uvct'), func_15('flwyia'))

Can you predict the output of `main_solution("lhnwgtzwmn")` 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": "lhnwgtzwmn"}, "ref_output": "t\u00abwfg\u00bbu\u00abvlc\u00bbt\u00abw\u00bb\u00aby\u00bb\u00abi\u00bb\u00aba\u00bb", "ref_code": "def main_solution(x):\n    return func_20(('twg' + 'uvct'), func_15('flwyia'))", "funcname": "main_solution"}
rule