Optionally, {HEAD ~ brochures} may be printed on {TAIL ~ one or both sides} of brochure blank assembly 40 
Optionally , { HEAD ~ brochures } may be printed on { TAIL ~ one or both sides } of brochure blank assembly 40
OTH OTH HEAD HEAD HEAD HEAD HEAD OTH OTH REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH