Read the following information carefully and answer the questions given below: Seven boxes- P, Q, R, S, T, U and V are kept one above the other in the...

Read the following information
carefully and answer the questions given below:
Seven boxes- P, Q, R, S, T, U and V are kept one above the
other in the form of the stack. Each box has different
items- Pen, Eraser, Colors, Pencil, Scale, Marker and
Highlighter but not in the same order.
Box Q is kept above the box which has marker. As many
boxes are kept above box Q as below box R. The box which
has marker is kept three boxes above the box P. The box
which has colors is kept immediately above box R. Four
boxes are kept between box R and the box which has
Highlighter. The number of boxes kept between the box S
and box T is one more than the number of boxes kept
between box T and the box which has colors. Box V is kept
below the box which has Scale but not just below. Box U is
kept three boxes above the box which has Eraser. The box
which has pen is kept above the box which has Pencil.

Question: How many boxes are there between box U and the box containing the Pencil?