Substantial portions of the method of {HEAD ~ the invention} are typically implemented on a computer system running {TAIL ~ a computer program product} 
Substantial portions of the method of { HEAD ~ the invention } are typically implemented on a computer system running { TAIL ~ a computer program product }
OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL