A comparison of {HEAD ~ the calculated performance factors} with optimum and typical failure mode performance factors identifies performance problems in the system under {TAIL ~ test} 
A comparison of { HEAD ~ the calculated performance factors } with optimum and typical failure mode performance factors identifies performance problems in the system under { TAIL ~ test }
OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL