Удиви меня

R f t

R f tR f tR f tR f tR f tR f tR f tR f tR f tR f tR f tR f tR f tR f tR f tR f tR f tR f tR f tR f tR f tR f tR f tR f tR f tR f tR f tR f tR f tR f tR f tR f tR f tR f tR f tR f tR f tR f tR f tR f tR f tR f tR f tR f tR f tR f tR f tR f t