You are given a code:

def main_solution(x):
    return ('wlnn' + 'yzn')

Can you predict the output of `main_solution("gxhdxijc")` 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": "gxhdxijc"}, "ref_output": "wlnnyzn", "ref_code": "def main_solution(x):\n    return ('wlnn' + 'yzn')", "funcname": "main_solution"}
rule