In additional embodiments, {HEAD ~ this list} may include any number of sell side and buy side firms and is not limited to {TAIL ~ actual users} of the subject system 
is not limited to
In additional embodiments , { HEAD ~ this list } may include any number of sell side and buy side firms and is not limited to { TAIL ~ actual users } of the subject system
OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH REL REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH