You are given a code:

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

Can you predict the output of `main_solution("uhsgdcpghf")` 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": "uhsgdcpghf"}, "ref_output": "m|u|y|h|d|s|y|g|d|c|p|g|h|f", "ref_code": "def main_solution(x):\n    return func_13(func_20('mydy', x), '|')", "funcname": "main_solution"}
rule