You are given a code:

def main_solution(x):
    return func_13(func_20('vwkwkc', 'zgfyzm'), '|')

Can you predict the output of `main_solution("kwcvrdocb")` 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": "kwcvrdocb"}, "ref_output": "v|z|w|g|k|f|w|y|k|z|c|m", "ref_code": "def main_solution(x):\n    return func_13(func_20('vwkwkc', 'zgfyzm'), '|')", "funcname": "main_solution"}
rule