You are given a code:

def main_solution(x):
    return func_20(func_15('bktac'), ('dgc' + x))

Can you predict the output of `main_solution("ijhfafjei")` 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": "ijhfafjei"}, "ref_output": "\u00abdbg\u00bbc\u00abikj\u00bbh\u00abfta\u00bbf\u00abjae\u00bbi\u00abc\u00bb", "ref_code": "def main_solution(x):\n    return func_20(func_15('bktac'), ('dgc' + x))", "funcname": "main_solution"}
rule