You are given a code:

def main_solution(x):
    return ('anzs' + 'bos')

Can you predict the output of `main_solution("zwxh")` 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": "zwxh"}, "ref_output": "anzsbos", "ref_code": "def main_solution(x):\n    return ('anzs' + 'bos')", "funcname": "main_solution"}
rule