You are given a code:

def main_solution(x):
    return func_20(func_5(x, 'ulek'), func_15('hyoq'))

Can you predict the output of `main_solution("spvxtvpmbx")` 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": "spvxtvpmbx"}, "ref_output": "u\u00ablhe\u00bbk\u00absyp\u00bbv\u00abxot\u00bbv\u00abpqm\u00bbbx", "ref_code": "def main_solution(x):\n    return func_20(func_5(x, 'ulek'), func_15('hyoq'))", "funcname": "main_solution"}
rule