You are given a code:

def main_solution(x):
    return func_9(func_13('ohqcp', '-'))

Can you predict the output of `main_solution("pgvwvcwq")` 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": "pgvwvcwq"}, "ref_output": "o-h-q-c-pp-c-q-h-o", "ref_code": "def main_solution(x):\n    return func_9(func_13('ohqcp', '-'))", "funcname": "main_solution"}
rule