You are given a code:

def main_solution(x):
    return ('hkxxyo' + 'uyqafe')

Can you predict the output of `main_solution("cvkikac")` 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": "cvkikac"}, "ref_output": "hkxxyouyqafe", "ref_code": "def main_solution(x):\n    return ('hkxxyo' + 'uyqafe')", "funcname": "main_solution"}
rule