You are given a code:

def main_solution(x):
    return func_20(func_19('ufcah', 1), func_15('vxeibv'))

Can you predict the output of `main_solution("xlcz")` 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": "xlcz"}, "ref_output": "f\u00abcva\u00bbh\u00abux\u00bb\u00abe\u00bb\u00abi\u00bb\u00abb\u00bb\u00abv\u00bb", "ref_code": "def main_solution(x):\n    return func_20(func_19('ufcah', 1), func_15('vxeibv'))", "funcname": "main_solution"}
rule