{HEAD ~ A drilling/reaming tool} includes {TAIL ~ a basic body} which extends in a longitudinal direction 
includes
{ HEAD ~ A drilling / reaming tool } includes { TAIL ~ a basic body } which extends in a longitudinal direction
HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH