In {TAIL ~ an embodiment}, {HEAD ~ the region} 38 has depth greater than the region 34 
In
In { TAIL ~ an embodiment } , { HEAD ~ the region } 38 has depth greater than the region 34
REL TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH