You are given a code:

def main_solution(x):
    return func_13(func_20('pjy', x), '-')

Can you predict the output of `main_solution("zyoefrdqpq")` 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": "zyoefrdqpq"}, "ref_output": "p-z-j-y-y-o-e-f-r-d-q-p-q", "ref_code": "def main_solution(x):\n    return func_13(func_20('pjy', x), '-')", "funcname": "main_solution"}
rule