A computer readable storage medium having stored thereon sequences of {TAIL ~ instruction} including {HEAD ~ instructions} that cause a processor to: 
A computer readable storage medium having stored thereon sequences of { TAIL ~ instruction } including { HEAD ~ instructions } that cause a processor to :
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH