{HEAD ~ the contact assembly} including {TAIL ~ a contact arm}, first and second spacers, and a pivot post 
including
{ HEAD ~ the contact assembly } including { TAIL ~ a contact arm } , first and second spacers , and a pivot post
HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH