tttt               tttt                  66666666
      ttt:::t            ttt:::t                 6::::::6
      t:::::t            t:::::t                6::::::6
      t:::::t            t:::::t               6::::::6
ttttttt:::::tttttttttttttt:::::ttttttt        6::::::6
t:::::::::::::::::tt:::::::::::::::::t       6::::::6
t:::::::::::::::::tt:::::::::::::::::t      6::::::6
tttttt:::::::tttttttttttt:::::::tttttt     6::::::::66666
      t:::::t            t:::::t          6::::::::::::::66
      t:::::t            t:::::t          6::::::66666:::::6
      t:::::t            t:::::t          6:::::6     6:::::6
      t:::::t    tttttt  t:::::t    tttttt6:::::6     6:::::6
      t::::::tttt:::::t  t::::::tttt:::::t6::::::66666::::::6
      tt::::::::::::::t  tt::::::::::::::t 66:::::::::::::66
        tt:::::::::::tt    tt:::::::::::tt   66:::::::::66
          ttttttttttt        ttttttttttt       666666666