Other switching circuits known to or arranged by one of skill in the art who has reviewed {HEAD ~ this disclosure} may be employed in {TAIL ~ the practice} of the present invention 
employed in
Other switching circuits known to or arranged by one of skill in the art who has reviewed { HEAD ~ this disclosure } may be employed in { TAIL ~ the practice } of the present invention
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH