A method in accordance 3, including {TAIL ~ the step} of determining {HEAD ~ the first analytical function} as: 
A method in accordance 3 , including { TAIL ~ the step } of determining { HEAD ~ the first analytical function } as :
OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH