You are given a code:

def main_solution(x):
    return ('cchzod' + 'xpi')

Can you predict the output of `main_solution("gknraldiz")` 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": "gknraldiz"}, "ref_output": "cchzodxpi", "ref_code": "def main_solution(x):\n    return ('cchzod' + 'xpi')", "funcname": "main_solution"}
rule