By way of example, but not by way of limitation, {TAIL ~ this trench} 24 may be filled with {HEAD ~ a CVD oxide} 
By way of example , but not by way of limitation , { TAIL ~ this trench } 24 may be filled with { HEAD ~ a CVD oxide }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD