The said device controls discharge members of {HEAD ~ the receiving containers} of {TAIL ~ the preceding stage}, which leads into a channel 
of
The said device controls discharge members of { HEAD ~ the receiving containers } of { TAIL ~ the preceding stage } , which leads into a channel
OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH