A part of {HEAD ~ the bag} or {TAIL ~ the entire bag} may be disposed on a seat pan 
A part of { HEAD ~ the bag } or { TAIL ~ the entire bag } may be disposed on a seat pan
OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH