How many boxes are kept between box X and the box which contains Pencil?

Study the given information and answer the questions:        Eight boxes Q, R, S, T, U, V, W and X are placed one above the other but not necessarily in the same order. These boxes contain different stationery items Eraser, Sharpner, Stapler, Push – pin, Fountain pen, Paper clip, Pencil and Colour box but not necessarily in the same order. There are two boxes between Box Q and the box which contains Pencil. Box T is just above the box which contains Sharpner. Two boxes are between boxes S and R, which is below box S. Neither box S nor the box which contains Eraser in bottom four. Box U contains Fountain pen but is not in the bottommost. Box R does not contain Stapler or Colour box. Box S is just above the box which contains Push – pin. The bottommost box does not contain Stapler or Sharpner. Three boxes are between the boxes which contains Eraser and Pencil. Box T is below Box R but not just below. Box R does not contain Pencil. Three boxes are kept between box V and the box which contains Eraser. Not more than two boxes are kept between W and X, which is below box W.