You are given a code:

def main_solution(x):
    return ('cjkov' + 'xzo')

Can you predict the output of `main_solution("uklnbqmz")` 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": "uklnbqmz"}, "ref_output": "cjkovxzo", "ref_code": "def main_solution(x):\n    return ('cjkov' + 'xzo')", "funcname": "main_solution"}
rule