You are given a code:

def main_solution(x):
    return func_3(('cwe' + 'utsaat'))

Can you predict the output of `main_solution("fscjyr")` 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": "fscjyr"}, "ref_output": "aacesttuw", "ref_code": "def main_solution(x):\n    return func_3(('cwe' + 'utsaat'))", "funcname": "main_solution"}
rule