You are given a code:

def main_solution(x):
    return func_20((x + 'rwxe'), func_15('xebi'))

Can you predict the output of `main_solution("oasraa")` 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": "oasraa"}, "ref_output": "o\u00abaxs\u00bbr\u00abaea\u00bbr\u00abwbx\u00bbe\u00abi\u00bb", "ref_code": "def main_solution(x):\n    return func_20((x + 'rwxe'), func_15('xebi'))", "funcname": "main_solution"}
rule