{HEAD ~ The lamp} includes {TAIL ~ a base} which, by way of example, is shown as a C clamp 
includes
{ HEAD ~ The lamp } includes { TAIL ~ a base } which , by way of example , is shown as a C clamp
HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH