You are given a code:

def main_solution(x):
    return func_20(func_17('uabnim'), func_13('mymiuo', '_'))

Can you predict the output of `main_solution("suzzhenf")` 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": "suzzhenf"}, "ref_output": "mmi_nyb_amu_i_u_o", "ref_code": "def main_solution(x):\n    return func_20(func_17('uabnim'), func_13('mymiuo', '_'))", "funcname": "main_solution"}
rule