In each rectangle, draw some line segments that pass through exactly 3 or 4 consecutive squares.  The line segments can only be (H) horizontal, (V) vertical, or (D) diagonal.  Every square must contain part of exactly one line segment.  A square containing a letter contains part of a segment with that orientation.  Each puzzle below has a unique solution. 
  
 
 
 
  
 
 
 
  
 
 
  
 
 
  
 
 
  
 
