You are given a code:

def main_solution(x):
    return func_20(func_1('naagbr', 4), func_15('kwri'))

Can you predict the output of `main_solution("iqce")` 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": "iqce"}, "ref_output": "n\u00abaka\u00bbg\u00abbwr\u00bbn\u00abara\u00bbg\u00abbir\u00bbnaagbrnaagbr", "ref_code": "def main_solution(x):\n    return func_20(func_1('naagbr', 4), func_15('kwri'))", "funcname": "main_solution"}
rule