S х x

S х xS х xS х xS х xS х xS х xS х xS х xS х xS х xS х xS х xS х xS х xS х xS х xS х xS х xS х xS х xS х xS х xS х xS х xS х xS х xS х xS х xS х xS х xS х xS х x