You are given a code:

def main_solution(x):
    return ('puheta' + 'twtl')

Can you predict the output of `main_solution("ioawl")` 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": "ioawl"}, "ref_output": "puhetatwtl", "ref_code": "def main_solution(x):\n    return ('puheta' + 'twtl')", "funcname": "main_solution"}
rule