{HEAD ~ None} of these three elements are in {TAIL ~ contact} with the test contact member when the latter is in its rest position 
are in
{ HEAD ~ None } of these three elements are in { TAIL ~ contact } with the test contact member when the latter is in its rest position
HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH REL REL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH