You are given a code:

def main_solution(x):
    return func_5(func_13('ipe', '-'), 'ncd')

Can you predict the output of `main_solution("pemkwjhu")` 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": "pemkwjhu"}, "ref_output": "ncdi-p-e", "ref_code": "def main_solution(x):\n    return func_5(func_13('ipe', '-'), 'ncd')", "funcname": "main_solution"}
rule