You are given a code:

def main_solution(x):
    return func_20(func_20(x, 'rrv'), func_15('zyowj'))

Can you predict the output of `main_solution("xotkpfcuvm")` 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": "xotkpfcuvm"}, "ref_output": "x\u00abrzo\u00bbr\u00abtyv\u00bbk\u00abpof\u00bbc\u00abuwv\u00bbm\u00abj\u00bb", "ref_code": "def main_solution(x):\n    return func_20(func_20(x, 'rrv'), func_15('zyowj'))", "funcname": "main_solution"}
rule