You are given a code:

def main_solution(x):
    return func_20(func_20('svm', 'lfkeg'), func_15('ombd'))

Can you predict the output of `main_solution("drla")` 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": "drla"}, "ref_output": "s\u00ablov\u00bbf\u00abmmk\u00bbe\u00abgb\u00bb\u00abd\u00bb", "ref_code": "def main_solution(x):\n    return func_20(func_20('svm', 'lfkeg'), func_15('ombd'))", "funcname": "main_solution"}
rule