{HEAD ~ The present system} defines {TAIL ~ a different way} of making and operating a variation on a pinned photodiode 
defines
{ HEAD ~ The present system } defines { TAIL ~ a different way } of making and operating a variation on a pinned photodiode
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