You are given a code:

def main_solution(x):
    return func_13(('onunib' + 'rstjro'), '|')

Can you predict the output of `main_solution("xcedd")` 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": "xcedd"}, "ref_output": "o|n|u|n|i|b|r|s|t|j|r|o", "ref_code": "def main_solution(x):\n    return func_13(('onunib' + 'rstjro'), '|')", "funcname": "main_solution"}
rule