You are given a code:

def main_solution(x):
    return func_20(func_15('zgnqxg'), func_20(x, 'pchds'))

Can you predict the output of `main_solution("ocrghiub")` 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": "ocrghiub"}, "ref_output": "\u00abozp\u00bbc\u00abcgr\u00bbh\u00abgnd\u00bbh\u00absqi\u00bbu\u00abbx\u00bb\u00abg\u00bb", "ref_code": "def main_solution(x):\n    return func_20(func_15('zgnqxg'), func_20(x, 'pchds'))", "funcname": "main_solution"}
rule