You are given a code:

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

Can you predict the output of `main_solution("ifcbhrkk")` 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": "ifcbhrkk"}, "ref_output": "p\u00abyii\u00bbo\u00abbfw\u00bbe\u00abzcr\u00bbv\u00abub\u00bb\u00abh\u00bb\u00abr\u00bb\u00abk\u00bb\u00abk\u00bb", "ref_code": "def main_solution(x):\n    return func_20(('pyiob' + 'wezrvu'), func_15(x))", "funcname": "main_solution"}
rule