In {TAIL ~ operation}, {HEAD ~ the consumer} unscrews the cap from the spout, ruptures the sealing membrane 44 at the top of the spout and pours the desired amount of liquid out of the carton 
In
In { TAIL ~ operation } , { HEAD ~ the consumer } unscrews the cap from the spout , ruptures the sealing membrane 44 at the top of the spout and pours the desired amount of liquid out of the carton
REL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH