You are given a code:

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

Can you predict the output of `main_solution("tkkawmepms")` 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": "tkkawmepms"}, "ref_output": "t|k|k|a|w|m|e|p|m|ssyeiig", "ref_code": "def main_solution(x):\n    return (func_13(x, '|') + func_4('syeiig'))", "funcname": "main_solution"}
rule