Note that according to the invention, there is no need to know the value of {HEAD ~ each parameter Pi} to calculate the set of {TAIL ~ correspondences}  
Note that according to the invention , there is no need to know the value of { HEAD ~ each parameter Pi } to calculate the set of { TAIL ~ correspondences }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL OTH