{HEAD ~ The container} is made from {TAIL ~ two flat panels} of heat sealable film, each shaped as a trapezium; or from a single web folded double 
is made from
{ HEAD ~ The container } is made from { TAIL ~ two flat panels } of heat sealable film , each shaped as a trapezium ; or from a single web folded double
HEAD HEAD HEAD HEAD HEAD HEAD REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH