You are given a code:

def main_solution(x):
    return func_20(('xiweqe' + 'pnrvtp'), func_15('fmqam'))

Can you predict the output of `main_solution("brnalbfref")` 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": "brnalbfref"}, "ref_output": "x\u00abifw\u00bbe\u00abqme\u00bbp\u00abnqr\u00bbv\u00abtap\u00bb\u00abm\u00bb", "ref_code": "def main_solution(x):\n    return func_20(('xiweqe' + 'pnrvtp'), func_15('fmqam'))", "funcname": "main_solution"}
rule