{HEAD ~ The tests} included in the security test scheme may take a variety of {TAIL ~ different forms}, some examples of which are described herein 
{ HEAD ~ The tests } included in the security test scheme may take a variety of { TAIL ~ different forms } , some examples of which are described herein
HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH