Aligning {TAIL ~ two sequences} within {HEAD ~ a specified diagonal band}, CA BIOS 8:5, 481 487 
Aligning { TAIL ~ two sequences } within { HEAD ~ a specified diagonal band } , CA BIOS 8:5 , 481 487
OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH