In a further embodiment, {TAIL ~ at least one line} has {HEAD ~ more than n straight line segments} 
In a further embodiment , { TAIL ~ at least one line } has { HEAD ~ more than n straight line segments }
OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD