{TAIL ~ 2N+1 rows} and 2M+1 columns, wherein N and M are integers, said 2N+1 rows and 2M+1 columns comprising at least three rows and {HEAD ~ at least five columns} or at least five rows and at least three columns 
{ TAIL ~ 2N+1 rows } and 2M+1 columns , wherein N and M are integers , said 2N+1 rows and 2M+1 columns comprising at least three rows and { HEAD ~ at least five columns } or at least five rows and at least three columns
TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH