You are given a code:

def main_solution(x):
    return func_20(func_3('gfddt'), func_15('mresrd'))

Can you predict the output of `main_solution("zwcg")` 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": "zwcg"}, "ref_output": "d\u00abdmf\u00bbg\u00abtr\u00bb\u00abe\u00bb\u00abs\u00bb\u00abr\u00bb\u00abd\u00bb", "ref_code": "def main_solution(x):\n    return func_20(func_3('gfddt'), func_15('mresrd'))", "funcname": "main_solution"}
rule