During such engagement, {HEAD ~ a high degree} of friction is created between {TAIL ~ the fingers} and the transverse wires with which they are engaged, thus assuring a secure connection between the mats of successive lifts of the wall 
During such engagement , { HEAD ~ a high degree } of friction is created between { TAIL ~ the fingers } and the transverse wires with which they are engaged , thus assuring a secure connection between the mats of successive lifts of the wall
OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH 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