You are given a code:

def main_solution(x):
    return func_20(func_15('ttimhj'), func_13('vaubm', '|'))

Can you predict the output of `main_solution("ynwl")` 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": "ynwl"}, "ref_output": "\u00abvt|\u00bba\u00ab|tu\u00bb|\u00abbi|\u00bbm\u00abm\u00bb\u00abh\u00bb\u00abj\u00bb", "ref_code": "def main_solution(x):\n    return func_20(func_15('ttimhj'), func_13('vaubm', '|'))", "funcname": "main_solution"}
rule