{HEAD ~ The system} includes a lamp, a ballast, a first interface, a storage unit, and {TAIL ~ a processing unit} 
{ HEAD ~ The system } includes a lamp , a ballast , a first interface , a storage unit , and { TAIL ~ a processing unit }
HEAD HEAD HEAD HEAD HEAD HEAD REL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL