In {HEAD ~ the case} of {TAIL ~ an n type device}, Ph dopants may be implanted 
of
In { HEAD ~ the case } of { TAIL ~ an n type device } , Ph dopants may be implanted
OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH