wherein m and n each represent an integer ranging from 2 to 5 and {TAIL ~ p} is {HEAD ~ an integer} ranging from 5 to 16 
wherein m and n each represent an integer ranging from 2 to 5 and { TAIL ~ p } is { HEAD ~ an integer } ranging from 5 to 16
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH