You are given a code:

def main_solution(x):
    return ('ciaht' + 'xsawwg')

Can you predict the output of `main_solution("kvyztppsd")` 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": "kvyztppsd"}, "ref_output": "ciahtxsawwg", "ref_code": "def main_solution(x):\n    return ('ciaht' + 'xsawwg')", "funcname": "main_solution"}
rule