N window

N windowN windowN windowN window
N windowN windowN windowN windowN windowN windowN windowN window
N windowN windowN windowN windowN windowN windowN windowN windowN windowN windowN windowN window
N windowN windowN windowN windowN windowN windowN windowN windowN windowN windowN windowN windowN windowN windowN windowN window
N windowN windowN windowN windowN windowN windowN windowN window