You are given a code:

def main_solution(x):
    return (func_13('fqtcd', '|') + func_13(x, '-'))

Can you predict the output of `main_solution("vapykkf")` 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": "vapykkf"}, "ref_output": "f|q|t|c|dv-a-p-y-k-k-f", "ref_code": "def main_solution(x):\n    return (func_13('fqtcd', '|') + func_13(x, '-'))", "funcname": "main_solution"}
rule