{HEAD ~ The present invention} is directed to {TAIL ~ a series} of peptides which may be used for stimulating sexual response in females 
is directed to
{ HEAD ~ The present invention } is directed to { TAIL ~ a series } of peptides which may be used for stimulating sexual response in females
HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH