,g&$ø ù.             TCG!
                    agggg         $$$$:   $a   ,g&$ø ù.
                     $$$$aaa aa   $$$$:   $$l  $$$$:   $a
                     $$$$:   gggga$$$$:   $$$l $$$$:   $$l
                     $$$$:   $$$$ $$$$:   $$$$ $$$$:   $$$l
                 a aaggggaa agggggggggaa aggggaggggaa aggggaa a
                     $$$$:  >$$$$$$$$$:   $$$$ $$$$:   $$$$
                     $$$$:   $$$$ $$$$:   $$$$y$$$$:   $$$$
                 ::: $$$$: ::$$$$y$$$$: ::gggga$$$$: ::$$$$ :::
                     $$$$:   $$$$$$$$$:   $$$$y$$$$:   $$$$
                     $$$$:   $$$$ $$$$aaa $$$$$$$$$:  >$$$$
                  -- $$$$aaa $$$$ --ACK-- $$$$ $$$$aaa $$$$ --
                             $$$$             agggg.   $$$$
                                               $$$$aaaa$$$$
                                               $$$$