You are given a code:

def main_solution(x):
    return func_20(func_20('taba', 'movh'), func_15(x))

Can you predict the output of `main_solution("ajpnnnn")` 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": "ajpnnnn"}, "ref_output": "t\u00abmaa\u00bbo\u00abbjv\u00bba\u00abhp\u00bb\u00abn\u00bb\u00abn\u00bb\u00abn\u00bb\u00abn\u00bb", "ref_code": "def main_solution(x):\n    return func_20(func_20('taba', 'movh'), func_15(x))", "funcname": "main_solution"}
rule