You are given a code:

def main_solution(x):
    return func_20(func_15(x), (x + 'wifpbm'))

Can you predict the output of `main_solution("ocvvjpkolm")` 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": "ocvvjpkolm"}, "ref_output": "\u00abooc\u00bbv\u00abvcj\u00bbp\u00abkvo\u00bbl\u00abmvw\u00bbi\u00abfjp\u00bbb\u00abmp\u00bb\u00abk\u00bb\u00abo\u00bb\u00abl\u00bb\u00abm\u00bb", "ref_code": "def main_solution(x):\n    return func_20(func_15(x), (x + 'wifpbm'))", "funcname": "main_solution"}
rule