These hats will be made from {HEAD ~ combinations} of an outer and {TAIL ~ an inner cover} 
of
These hats will be made from { HEAD ~ combinations } of an outer and { TAIL ~ an inner cover }
OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD REL OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL