You are given a code:

def main_solution(x):
    return (func_13(x, '|') + func_20(x, 'wknx'))

Can you predict the output of `main_solution("hnkjphpva")` 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": "hnkjphpva"}, "ref_output": "h|n|k|j|p|h|p|v|ahwnkknjxphpva", "ref_code": "def main_solution(x):\n    return (func_13(x, '|') + func_20(x, 'wknx'))", "funcname": "main_solution"}
rule