{HEAD ~ A mat combination} for {TAIL ~ use} in constructing a soil reinforced retaining wall at the face of an earthen formation, said combination comprising: 
for
{ HEAD ~ A mat combination } for { TAIL ~ use } in constructing a soil reinforced retaining wall at the face of an earthen formation , said combination comprising :
HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH