You are given a code:

def main_solution(x):
    return (func_13('sohkog', '|') + func_13('bynaey', '_'))

Can you predict the output of `main_solution("wpddzfkrk")` 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": "wpddzfkrk"}, "ref_output": "s|o|h|k|o|gb_y_n_a_e_y", "ref_code": "def main_solution(x):\n    return (func_13('sohkog', '|') + func_13('bynaey', '_'))", "funcname": "main_solution"}
rule