You are given a code:

def main_solution(x):
    return func_20(func_20('crny', 'hpjcz'), func_15('eqge'))

Can you predict the output of `main_solution("hmjdi")` 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": "hmjdi"}, "ref_output": "c\u00abher\u00bbp\u00abnqj\u00bby\u00abcgz\u00bb\u00abe\u00bb", "ref_code": "def main_solution(x):\n    return func_20(func_20('crny', 'hpjcz'), func_15('eqge'))", "funcname": "main_solution"}
rule