You are given a code:

def main_solution(x):
    return func_20(func_15('lwty'), func_13(x, '-'))

Can you predict the output of `main_solution("knlwjps")` 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": "knlwjps"}, "ref_output": "\u00abkl-\u00bbn\u00ab-wl\u00bb-\u00abwt-\u00bbj\u00ab-yp\u00bb-s", "ref_code": "def main_solution(x):\n    return func_20(func_15('lwty'), func_13(x, '-'))", "funcname": "main_solution"}
rule