You are given a code:

def main_solution(x):
    return func_20(func_15('bjywrv'), func_20(x, 'gyq'))

Can you predict the output of `main_solution("vommwotppy")` 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": "vommwotppy"}, "ref_output": "\u00abvbg\u00bbo\u00abyjm\u00bbq\u00abmyw\u00bbo\u00abtwp\u00bbp\u00abyr\u00bb\u00abv\u00bb", "ref_code": "def main_solution(x):\n    return func_20(func_15('bjywrv'), func_20(x, 'gyq'))", "funcname": "main_solution"}
rule