The filler material can be {HEAD ~ a wide variety} of {TAIL ~ materials} such as wood putty, acrylic sealant, fiberglass resin fillers, epoxy adhesives, and plastic 
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The filler material can be { HEAD ~ a wide variety } of { TAIL ~ materials } such as wood putty , acrylic sealant , fiberglass resin fillers , epoxy adhesives , and plastic
OTH OTH OTH OTH OTH 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