{HEAD ~ Bottom} 20 includes {TAIL ~ a translucent section} or sheet 52 which is supported with a slight distance between bottom 20 and section 52 to form an opening between bottom 20 and section 52 so that messages received from others can be slipped under translucent sheet 52 
includes
{ HEAD ~ Bottom } 20 includes { TAIL ~ a translucent section } or sheet 52 which is supported with a slight distance between bottom 20 and section 52 to form an opening between bottom 20 and section 52 so that messages received from others can be slipped under translucent sheet 52
HEAD HEAD HEAD HEAD HEAD OTH REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH