The present invention has reduced or eliminated {TAIL ~ the problems} associated with {HEAD ~ the prior art} previously described 
The present invention has reduced or eliminated { TAIL ~ the problems } associated with { HEAD ~ the prior art } previously described
OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH