In the operational parameter group, {HEAD ~ the prime parameter} is {TAIL ~ the operation cost} and the parameter set is a set of operational efficiency parameters  
In the operational parameter group , { HEAD ~ the prime parameter } is { TAIL ~ the operation cost } and the parameter set is a set of operational efficiency parameters
OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH