Удиви меня

S х x

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