{HEAD ~ This sub assembly} is manufactured by making a pattern of apertures in a planar element, thereby forming {TAIL ~ a number} of securing elements 
{ HEAD ~ This sub assembly } is manufactured by making a pattern of apertures in a planar element , thereby forming { TAIL ~ a number } of securing elements
HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH