You are given a code:

def main_solution(x):
    return func_20(func_15(x), ('ryqkcm' + 'aavv'))

Can you predict the output of `main_solution("wspuhjet")` 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": "wspuhjet"}, "ref_output": "\u00abrwy\u00bbq\u00abksc\u00bbm\u00abapa\u00bbv\u00abvu\u00bb\u00abh\u00bb\u00abj\u00bb\u00abe\u00bb\u00abt\u00bb", "ref_code": "def main_solution(x):\n    return func_20(func_15(x), ('ryqkcm' + 'aavv'))", "funcname": "main_solution"}
rule