In turn, this movement of the floor pan allows the seat to move in {TAIL ~ the same direction} as the vehicle roof maintaining the distance between roof and {HEAD ~ seat} 
In turn , this movement of the floor pan allows the seat to move in { TAIL ~ the same direction } as the vehicle roof maintaining the distance between roof and { HEAD ~ seat }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD