You are given a code:

def main_solution(x):
    return func_4(func_13('zxcpcs', '|'))

Can you predict the output of `main_solution("lcpbeno")` 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": "lcpbeno"}, "ref_output": "z|x|c|p|c|s", "ref_code": "def main_solution(x):\n    return func_4(func_13('zxcpcs', '|'))", "funcname": "main_solution"}
rule