You are given a code:

def main_solution(x):
    return func_20(func_20(x, 'alds'), func_15('gscnf'))

Can you predict the output of `main_solution("lehek")` 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": "lehek"}, "ref_output": "l\u00abage\u00bbl\u00abhsd\u00bbe\u00absck\u00bb\u00abn\u00bb\u00abf\u00bb", "ref_code": "def main_solution(x):\n    return func_20(func_20(x, 'alds'), func_15('gscnf'))", "funcname": "main_solution"}
rule