After dispensing, {TAIL ~ the screw cap} is replaced on {HEAD ~ the spout} and the carton stored until the next dispensing operation 
After dispensing , { TAIL ~ the screw cap } is replaced on { HEAD ~ the spout } and the carton stored until the next dispensing operation
OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH