You are given a code:

def main_solution(x):
    return func_20(func_13('kqstmb', '|'), func_15('adympg'))

Can you predict the output of `main_solution("gafz")` 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": "gafz"}, "ref_output": "k\u00ab|aq\u00bb|\u00absd|\u00bbt\u00ab|ym\u00bb|\u00abbm\u00bb\u00abp\u00bb\u00abg\u00bb", "ref_code": "def main_solution(x):\n    return func_20(func_13('kqstmb', '|'), func_15('adympg'))", "funcname": "main_solution"}
rule