securing {HEAD ~ a backing sheet} of {TAIL ~ supple fabric material} with one broadside thereof affixed to the other broadside of the sheet of flexible, resilient material 
of
securing { HEAD ~ a backing sheet } of { TAIL ~ supple fabric material } with one broadside thereof affixed to the other broadside of the sheet of flexible , resilient material
OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH