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