{HEAD ~ The vacuum switch} includes {TAIL ~ a movable connecting pin}, a drive lever, a spring, and a stop 
includes
{ HEAD ~ The vacuum switch } includes { TAIL ~ a movable connecting pin } , a drive lever , a spring , and a stop
HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH