{HEAD ~ The RMIC materials} may also include {TAIL ~ a variety} of other elements, such as titanium, hafnium, aluminum, and chromium 
{ HEAD ~ The RMIC materials } may also include { TAIL ~ a variety } of other elements , such as titanium , hafnium , aluminum , and chromium
HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH