The flaps 46 are made of {TAIL ~ the same material} as {HEAD ~ the flaps} 20 
The flaps 46 are made of { TAIL ~ the same material } as { HEAD ~ the flaps } 20
OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH