For example, {TAIL ~ the wafer} has been processed to form {HEAD ~ various line patterns} that combine to form various gate structures of devices, such as gate structures of transistors 
For example , { TAIL ~ the wafer } has been processed to form { HEAD ~ various line patterns } that combine to form various gate structures of devices , such as gate structures of transistors
OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH