The guard member defines a plurality of {HEAD ~ apertures} that are aligned with {TAIL ~ respective nozzle openings} 
are aligned with
The guard member defines a plurality of { HEAD ~ apertures } that are aligned with { TAIL ~ respective nozzle openings }
OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD OTH REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL