You are given a code:

def main_solution(x):
    return func_20(func_15('weven'), func_13('oraubw', '_'))

Can you predict the output of `main_solution("hzpsj")` 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": "hzpsj"}, "ref_output": "\u00abow_\u00bbr\u00ab_ea\u00bb_\u00abuv_\u00bbb\u00ab_ew\u00bb\u00abn\u00bb", "ref_code": "def main_solution(x):\n    return func_20(func_15('weven'), func_13('oraubw', '_'))", "funcname": "main_solution"}
rule