You are given a code:

def main_solution(x):
    return ('rkazuq' + 'ywc')

Can you predict the output of `main_solution("xjgjkh")` 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": "xjgjkh"}, "ref_output": "rkazuqywc", "ref_code": "def main_solution(x):\n    return ('rkazuq' + 'ywc')", "funcname": "main_solution"}
rule