You are given a code:

def main_solution(x):
    return func_20(func_5(x, 'xhva'), func_15('aenkn'))

Can you predict the output of `main_solution("fqwbsykd")` 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": "fqwbsykd"}, "ref_output": "x\u00abhav\u00bba\u00abfeq\u00bbw\u00abbns\u00bby\u00abkkd\u00bb\u00abn\u00bb", "ref_code": "def main_solution(x):\n    return func_20(func_5(x, 'xhva'), func_15('aenkn'))", "funcname": "main_solution"}
rule