You are given a code:

def main_solution(x):
    return func_20(func_5(x, 'ixm'), func_15('kxn'))

Can you predict the output of `main_solution("jzkijkc")` 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": "jzkijkc"}, "ref_output": "i\u00abxkm\u00bbj\u00abzxk\u00bbi\u00abjnk\u00bbc", "ref_code": "def main_solution(x):\n    return func_20(func_5(x, 'ixm'), func_15('kxn'))", "funcname": "main_solution"}
rule