You are given a code:

def main_solution(x):
    return func_20(func_13('cfup', '-'), ('cxbwe' + 'gfbvar'))

Can you predict the output of `main_solution("izlsvwpm")` 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": "izlsvwpm"}, "ref_output": "cc-xfb-wue-gpfbvar", "ref_code": "def main_solution(x):\n    return func_20(func_13('cfup', '-'), ('cxbwe' + 'gfbvar'))", "funcname": "main_solution"}
rule