You are given a code:

def main_solution(x):
    return func_20(func_1('wmhnnv', 4), func_15('cmcn'))

Can you predict the output of `main_solution("tvolips")` 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": "tvolips"}, "ref_output": "w\u00abmch\u00bbn\u00abnmv\u00bbw\u00abmch\u00bbn\u00abnnv\u00bbwmhnnvwmhnnv", "ref_code": "def main_solution(x):\n    return func_20(func_1('wmhnnv', 4), func_15('cmcn'))", "funcname": "main_solution"}
rule