You are given a code:

def main_solution(x):
    return (('dsrrhb' + 'ftnbk') + func_15(x))

Can you predict the output of `main_solution("faisqlwwfe")` 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": "faisqlwwfe"}, "ref_output": "dsrrhbftnbk\u00abf\u00bb\u00aba\u00bb\u00abi\u00bb\u00abs\u00bb\u00abq\u00bb\u00abl\u00bb\u00abw\u00bb\u00abw\u00bb\u00abf\u00bb\u00abe\u00bb", "ref_code": "def main_solution(x):\n    return (('dsrrhb' + 'ftnbk') + func_15(x))", "funcname": "main_solution"}
rule