You are given a code:

def main_solution(x):
    return ('zjc' + 'zxjswe')

Can you predict the output of `main_solution("sydyyr")` 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": "sydyyr"}, "ref_output": "zjczxjswe", "ref_code": "def main_solution(x):\n    return ('zjc' + 'zxjswe')", "funcname": "main_solution"}
rule