You are given a code:

def main_solution(x):
    return func_20(func_5(x, 'pajz'), func_15('kgtori'))

Can you predict the output of `main_solution("zallvcfek")` 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": "zallvcfek"}, "ref_output": "p\u00abakj\u00bbz\u00abzga\u00bbl\u00abltv\u00bbc\u00abfoe\u00bbk\u00abr\u00bb\u00abi\u00bb", "ref_code": "def main_solution(x):\n    return func_20(func_5(x, 'pajz'), func_15('kgtori'))", "funcname": "main_solution"}
rule