You are given a code:

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

Can you predict the output of `main_solution("yjiyawjucf")` 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": "yjiyawjucf"}, "ref_output": "y\u00ab|mj\u00bb|\u00abic|\u00bby\u00ab|da\u00bb|w|j|u|c|f", "ref_code": "def main_solution(x):\n    return func_20(func_13(x, '|'), func_15('mcd'))", "funcname": "main_solution"}
rule