{TAIL ~ Interspersed particles} of {HEAD ~ a carbonaceous material} may be used to improve the electrical conductivity 
{ TAIL ~ Interspersed particles } of { HEAD ~ a carbonaceous material } may be used to improve the electrical conductivity
TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH