You are given a code:

def main_solution(x):
    return func_20(func_20(x, x), func_15('clkxf'))

Can you predict the output of `main_solution("sczphkah")` 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": "sczphkah"}, "ref_output": "s\u00abscc\u00bbc\u00abzlz\u00bbp\u00abpkh\u00bbh\u00abkxk\u00bba\u00abafh\u00bbh", "ref_code": "def main_solution(x):\n    return func_20(func_20(x, x), func_15('clkxf'))", "funcname": "main_solution"}
rule