{HEAD ~ A reciprocable drive mechanism} supporting {TAIL ~ the hammer bank} is mounted to undergo free flight with low friction along a selected axis parallel to a printing line 
supporting
{ HEAD ~ A reciprocable drive mechanism } supporting { TAIL ~ the hammer bank } is mounted to undergo free flight with low friction along a selected axis parallel to a printing line
HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD 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