You are given a code:

def main_solution(x):
    return func_20(func_1('ipfimr', 4), func_15('zdnjeu'))

Can you predict the output of `main_solution("nqgf")` 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": "nqgf"}, "ref_output": "i\u00abpzf\u00bbi\u00abmdr\u00bbi\u00abpnf\u00bbi\u00abmjr\u00bbi\u00abpef\u00bbi\u00abmur\u00bbipfimr", "ref_code": "def main_solution(x):\n    return func_20(func_1('ipfimr', 4), func_15('zdnjeu'))", "funcname": "main_solution"}
rule