You are given a code:

def main_solution(x):
    return func_20(func_13(x, '-'), func_15('oakk'))

Can you predict the output of `main_solution("lbrlxlrc")` 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": "lbrlxlrc"}, "ref_output": "l\u00ab-ob\u00bb-\u00abra-\u00bbl\u00ab-kx\u00bb-\u00ablk-\u00bbr-c", "ref_code": "def main_solution(x):\n    return func_20(func_13(x, '-'), func_15('oakk'))", "funcname": "main_solution"}
rule