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