{TAIL ~ Spacers} maintain {HEAD ~ the plate spacing} so that the plate second portions do not overlap 
{ TAIL ~ Spacers } maintain { HEAD ~ the plate spacing } so that the plate second portions do not overlap
TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH