You are given a code:

def main_solution(x):
    return func_20(func_13('pjr', '_'), func_15('wnlcdw'))

Can you predict the output of `main_solution("ixmzfc")` 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": "ixmzfc"}, "ref_output": "p\u00ab_wj\u00bb_\u00abrn\u00bb\u00abl\u00bb\u00abc\u00bb\u00abd\u00bb\u00abw\u00bb", "ref_code": "def main_solution(x):\n    return func_20(func_13('pjr', '_'), func_15('wnlcdw'))", "funcname": "main_solution"}
rule