You are given a code:

def main_solution(x):
    return (func_23('rixyk', 2) + func_20('xzzg', x))

Can you predict the output of `main_solution("xhxv")` 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": "xhxv"}, "ref_output": "rixyk1xxzhzxgv", "ref_code": "def main_solution(x):\n    return (func_23('rixyk', 2) + func_20('xzzg', x))", "funcname": "main_solution"}
rule