As {TAIL ~ the hash values} are stored in the first table, they are compared to the hash values stored in the second table to identify {HEAD ~ new connections} 
As { TAIL ~ the hash values } are stored in the first table , they are compared to the hash values stored in the second table to identify { HEAD ~ new connections }
OTH 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 HEAD HEAD HEAD HEAD HEAD HEAD