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