First, a pad used in {HEAD ~ semiconductor device fabrication} is rotated in {TAIL ~ a first direction}  
First , a pad used in { HEAD ~ semiconductor device fabrication } is rotated in { TAIL ~ a first direction }
OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH