Further, at Step 635, it is determined whether a decrementing condition has occurred, whereas {HEAD ~ decrementing conditions} are also {TAIL ~ particular events} of interest 
are
Further , at Step 635 , it is determined whether a decrementing condition has occurred , whereas { HEAD ~ decrementing conditions } are also { TAIL ~ particular events } of interest
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH