You are given a code:

def main_solution(x):
    return func_20(func_15('cygms'), func_20('noyyk', 'dklv'))

Can you predict the output of `main_solution("imcg")` 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": "imcg"}, "ref_output": "\u00abncd\u00bbo\u00abkyy\u00bbl\u00abygv\u00bbk\u00abm\u00bb\u00abs\u00bb", "ref_code": "def main_solution(x):\n    return func_20(func_15('cygms'), func_20('noyyk', 'dklv'))", "funcname": "main_solution"}
rule