You are given a code:

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

Can you predict the output of `main_solution("tefipddmw")` 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": "tefipddmw"}, "ref_output": "t|e|f|i|p|d|d|m|w|l|k|i|y|j|e", "ref_code": "def main_solution(x):\n    return func_13((x + 'lkiyje'), '|')", "funcname": "main_solution"}
rule