{HEAD ~ Speed} of training and cost efficiencies are obtained by providing {TAIL ~ training} at a rate two to three times faster than the previous art 
obtained by providing
{ HEAD ~ Speed } of training and cost efficiencies are obtained by providing { TAIL ~ training } at a rate two to three times faster than the previous art
HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH REL REL REL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH