{HEAD ~ The cosmetic and pharmaceutical formulations} may comprise {TAIL ~ further hydrocarbons}, for example paraffins 
comprise
{ HEAD ~ The cosmetic and pharmaceutical formulations } may comprise { TAIL ~ further hydrocarbons } , for example paraffins
HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH