The only difference being that with the modified first embodiment compaction to move the upright portion UP1 of the face mats must be sufficient to move {HEAD ~ the face mats} to {TAIL ~ a vertical disposition} 
to
The only difference being that with the modified first embodiment compaction to move the upright portion UP1 of the face mats must be sufficient to move { HEAD ~ the face mats } to { TAIL ~ a vertical disposition }
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 HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL