In both of these embodiments, {HEAD ~ the reinforcing mat} has {TAIL ~ a bent up end} of a height less than that of the upright portion of the face mat and an elongate body for embedment in an earthen formation 
has
In both of these embodiments , { HEAD ~ the reinforcing mat } has { TAIL ~ a bent up end } of a height less than that of the upright portion of the face mat and an elongate body for embedment in an earthen formation
OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL 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