The method 6, wherein {HEAD ~ each} of the small area sites is further divided into {TAIL ~ a plurality} of areas of patterns so as to implement a further lower testing position level under the testing position level of the small area sites in the testing hierarchy 
is divided into
The method 6 , wherein { HEAD ~ each } of the small area sites is further divided into { TAIL ~ a plurality } of areas of patterns so as to implement a further lower testing position level under the testing position level of the small area sites in the testing hierarchy
OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH REL OTH REL REL 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 OTH OTH OTH OTH OTH