cc  cCCc    cc  cCCc    cc  cCCc    cc  cCCc    cc  cCCc    cc  cCCc 
 CCCCCCCCCCC CCCCCCCCCCC CCCCCCCCCCC CCCCCCCCCCC CCCCCCCCCCC CCCCCCCCCCC
  CCCCCCCCC   CCCCCCCCC   CCCCCCCCC   CCCCCCCCC   CCCCCCCCC   CCCCCCCCC 
                                                                        
    ttTt       ttTt       ttTt       ttTt       ttTt       ttTt       tt
   tTTtT      tTTtT      tTTtT      tTTtT      tTTtT      tTTtT      tTT
   TtTtTt     TtTtTt     TtTtTt     TtTtTt     TtTtTt     TtTtTt     TtT
   TTtTttt    TTtTttt    TTtTttt    TTtTttt    TTtTttt    TTtTttt    TTt
  ttTtttBt   ttTtttBt   ttTtttBt   ttTtttBt   ttTtttBt   ttTtttBt   ttTt
  TTtTTttTt  TTtTTttTt  TTtTTttTt  TTtTTttTt  TTtTTttTt  TTtTTttTt  TTtT
  ttTTttTt   ttTTttTt   ttTTttTt   ttTTttTt   ttTTttTt   ttTTttTt   ttTT
   tttTtt     tttTtt     tttTtt     tttTtt     tttTtt     tttTtt     ttt
     WW         WW         WW         WW         WW         WW         W
     WW         WW         WW         WW         WW         WW         W
  f  WWf    f   Wf    f    fW   f    fWW  f    f WW f    f  WWf    f   W
 fFf WfFf  fFf  fFf  fFf  fFf  fFf  fFfW fFf  fFfWWfFf  fFf WfFf  fFf  f
 FFF  FFF  FFF  FFF  FFF  FFF  FFF  FFF  FFF  FFF  FFF  FFF  FFF  FFF  F
fFFFffFFFffFFFffFFFffFFFffFFFffFFFffFFFffFFFffFFFffFFFffFFFffFFFffFFFffF
 FFF  FFF  FFF  FFF  FFF  FFF  FFF  FFF  FFF  FFF  FFF  FFF  FFF  FFF  F
 FFF  FFF  FFF  FFF  FFF  FFF  FFF  FFF  FFF  FFF  FFF  FFF  FFF  FFF  F