You are given a code:

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

Can you predict the output of `main_solution("aonvprgjh")` 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": "aonvprgjh"}, "ref_output": "odpa-o-n-v-p-r-g-j-h", "ref_code": "def main_solution(x):\n    return func_5(func_13(x, '-'), 'odp')", "funcname": "main_solution"}
rule