You are given a code:

def main_solution(x):
    return (func_15(x) + (x + 'ulkx'))

Can you predict the output of `main_solution("wgnisalso")` 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": "wgnisalso"}, "ref_output": "\u00abw\u00bb\u00abg\u00bb\u00abn\u00bb\u00abi\u00bb\u00abs\u00bb\u00aba\u00bb\u00abl\u00bb\u00abs\u00bb\u00abo\u00bbwgnisalsoulkx", "ref_code": "def main_solution(x):\n    return (func_15(x) + (x + 'ulkx'))", "funcname": "main_solution"}
rule