You are given a code:

def main_solution(x):
    return ('jczzl' + 'nkk')

Can you predict the output of `main_solution("xllxqail")` 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": "xllxqail"}, "ref_output": "jczzlnkk", "ref_code": "def main_solution(x):\n    return ('jczzl' + 'nkk')", "funcname": "main_solution"}
rule