A placement quality parameter for each of the block configurations is derived based on {HEAD ~ a set} of block placement rules and on the layout quality parameters, and a final block configuration is selected by comparing the placement quality parameters corresponding to {TAIL ~ particular block configurations} 
A placement quality parameter for each of the block configurations is derived based on { HEAD ~ a set } of block placement rules and on the layout quality parameters , and a final block configuration is selected by comparing the placement quality parameters corresponding to { TAIL ~ particular block configurations }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD 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 TAIL TAIL TAIL TAIL TAIL TAIL TAIL