{HEAD ~ This intentionally formed irregularity} prevents {TAIL ~ the wafer} from warping and thus the resulting wafer will scarcely have a bow 
prevents
{ HEAD ~ This intentionally formed irregularity } prevents { TAIL ~ the wafer } from warping and thus the resulting wafer will scarcely have a bow
HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH