{HEAD ~ The preservatives} contain Diphenylamine, Ethoxyquin, {TAIL ~ Alkali earth silicates} and a combustible wax 
contain
{ HEAD ~ The preservatives } contain Diphenylamine , Ethoxyquin , { TAIL ~ Alkali earth silicates } and a combustible wax
HEAD HEAD HEAD HEAD HEAD HEAD REL OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH