{HEAD ~ A prefabricated plug in assembly} includes a front subframe and {TAIL ~ a plug pin} arranged in it 
includes
{ HEAD ~ A prefabricated plug in assembly } includes a front subframe and { TAIL ~ a plug pin } arranged in it
HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH