In an exemplary embodiment this list contains both sell side and buy side firms and is limited to {HEAD ~ actual users} of {TAIL ~ the subject system}; however, in other embodiments this list may be limited to only sell side firms, or only buy side firms 
In an exemplary embodiment this list contains both sell side and buy side firms and is limited to { HEAD ~ actual users } of { TAIL ~ the subject system } ; however , in other embodiments this list may be limited to only sell side firms , or only buy side firms
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH