We further describe {HEAD ~ a printing system} capable of laying down {TAIL ~ said materials} in a definite pattern 
We further describe { HEAD ~ a printing system } capable of laying down { TAIL ~ said materials } in a definite pattern
OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH