You are given a code:

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

Can you predict the output of `main_solution("ncor")` 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": "ncor"}, "ref_output": "b\u00abuib\u00bbc\u00abnxc\u00bbo\u00abro\u00bb", "ref_code": "def main_solution(x):\n    return func_20(('bubc' + x), func_15('ixo'))", "funcname": "main_solution"}
rule