engage claws continuously formed with {HEAD ~ said further arcuate portions} respectively and matched to {TAIL ~ the engage grooves} of the elongated mating member, respectively, and matched to the engage grooves of the elongated mating member, respectively 
engage claws continuously formed with { HEAD ~ said further arcuate portions } respectively and matched to { TAIL ~ the engage grooves } of the elongated mating member , respectively , and matched to the engage grooves of the elongated mating member , respectively
OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH 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