66666666             tttt                                         tttt          
        6::::::6           ttt:::t                                      ttt:::t          
       6::::::6            t:::::t                                      t:::::t          
      6::::::6             t:::::t                                      t:::::t          
     6::::::6        ttttttt:::::ttttttt     rrrrr   rrrrrrrrr    ttttttt:::::ttttttt    
    6::::::6         t:::::::::::::::::t     r::::rrr:::::::::r   t:::::::::::::::::t    
   6::::::6          t:::::::::::::::::t     r:::::::::::::::::r  t:::::::::::::::::t    
  6::::::::66666     tttttt:::::::tttttt     rr::::::rrrrr::::::r tttttt:::::::tttttt    
 6::::::::::::::66         t:::::t            r:::::r     r:::::r       t:::::t          
 6::::::66666:::::6        t:::::t            r:::::r     rrrrrrr       t:::::t          
 6:::::6     6:::::6       t:::::t            r:::::r                   t:::::t          
 6:::::6     6:::::6       t:::::t    tttttt  r:::::r                   t:::::t    tttttt
 6::::::66666::::::6       t::::::tttt:::::t  r:::::r                   t::::::tttt:::::t
  66:::::::::::::66        tt::::::::::::::t  r:::::r                   tt::::::::::::::t
    66:::::::::66            tt:::::::::::tt  r:::::r                     tt:::::::::::tt
      666666666                ttttttttttt    rrrrrrr                       ttttttttttt