In a roof frame 38, there is {TAIL ~ a peripheral cover edge seal} 36 in {HEAD ~ a groove} 40 
In a roof frame 38 , there is { TAIL ~ a peripheral cover edge seal } 36 in { HEAD ~ a groove } 40
OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH