You are given a code:

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

Can you predict the output of `main_solution("pkhysdkfia")` 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": "pkhysdkfia"}, "ref_output": "p|y|k|o|h|i|y|d|s|v|d|k|f|i|a", "ref_code": "def main_solution(x):\n    return func_13(func_20(x, 'yoidv'), '|')", "funcname": "main_solution"}
rule