You are given a code:

def main_solution(x):
    return ('spzyt' + 'suac')

Can you predict the output of `main_solution("tpouyjqx")` 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": "tpouyjqx"}, "ref_output": "spzytsuac", "ref_code": "def main_solution(x):\n    return ('spzyt' + 'suac')", "funcname": "main_solution"}
rule