You are given a code:

def main_solution(x):
    return (func_5('asoz', 'xnpn') + func_13('wfptkg', '_'))

Can you predict the output of `main_solution("eeem")` 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": "eeem"}, "ref_output": "xnpnasozw_f_p_t_k_g", "ref_code": "def main_solution(x):\n    return (func_5('asoz', 'xnpn') + func_13('wfptkg', '_'))", "funcname": "main_solution"}
rule