{HEAD ~ The metals} containing mesogens are heated to a temperature sufficient to cause fusion to produce {TAIL ~ a metals} containing mesophase pitch 
{ HEAD ~ The metals } containing mesogens are heated to a temperature sufficient to cause fusion to produce { TAIL ~ a metals } containing mesophase pitch
HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH