my $root =
[
 [
  ['a','b'],
  [
   [[['c','d'],[['e','f'],'g']],[['h',['i',['j','k']]],'l']],
   [['m',['n',['o','p']]],'q']
  ]
 ],
 [
  [
   [
    [[[['r',[['s','t'],'u']],'v'],['w','x']],[['y','z'],]],
    [
     ['1',[['2','3'],[['4','5'],[['6',['7',['8','9']]],['A','B']]]]],
     [[['C','D'],['E','F']],'G']
    ]
   ],
   [
    [
     [['H',[['I',['J','K']],'L']],[['M','N'],'O']],
     ['P',[[[['Q','R'],['S','T']],'U'],['V','W']]]
    ],
    ['X','Y']
   ]
  ],'Z'
 ]
]
;

##</code><code>##

C:\test>anonBinTreeDumper.pl
    _____________________________/\______________________________________________________________________________________
  _/\___________________                                                             ___________________________________/\
 /\           _________/\_______                     _______________________________/\_______________________________    Z
a b     _____/\_______    _____/\               ____/\_____________________                          _______________/\_
      _/\___    _____/\  /\_    q           ___/\      ___________________/\_______            _____/\_               /\
     /\   _/\  /\_    l m  /\_            _/\_ _/     /\___                    ___/\   _______/\___   /\_________    X Y
    c d  /\ g h  /\_      n  /\     _____/\  //\     1   _/\___              _/\_  G  /\_____    _/\ P         _/\_
        e f     i  /\       o p    /\___  v wyxz        /\   _/\_______     /\  /\   H   ___/\  /\ O       ___/\  /\
                  j k             r   _/\              2 3  /\   _____/\_  C D E F      /\_  L M N       _/\_  U V W
                                     /\ u                  4 5  /\_     /\             I  /\            /\  /\
                                    s t                        6  /\_  A B               J K           Q R S T
                                                                 7  /\
                                                                   8 9

##</code><code>##

my $root =
[
 [
  ['a','b'],
  [
   [[['c','d'],[['e','f'],'g']],[['h',['i',['j','k']]],'l']],
   [['m',['n',['o','p']]],'q']
  ]
 ],
 [
  [
   [
    [[[['r',[['s','t'],'u']],'v'],['w','x']],[['y','z']]],
    [
     ['1',[['2','3'],[['4','5'],[['6',['7',['8','9']]],['A','B']]]]],
     [[['C','D'],['E','F']],'G']
    ]
   ],
   [
    [
     [['H',[['I',['J','K']],'L']],[['M','N'],'O']],
     ['P',[[[['Q','R'],['S','T']],'U'],['V','W']]]
    ],
    ['X','Y']
   ]
  ],'Z'
 ]
]
;

##</code><code>##

C:\test>anonBinTreeDumper.pl
    _____________________________/\______________________________________________________________________________________
  _/\___________________                                                             ___________________________________/\
 /\           _________/\_______                     _______________________________/\_______________________________    Z
a b     _____/\_______    _____/\               ____/\_____________________                          _______________/\_
      _/\___    _____/\  /\_    q           ___/\      ___________________/\_______            _____/\_               /\
     /\   _/\  /\_    l m  /\_            _/\_ _/     /\___                    ___/\   _______/\___   /\_________    X Y
    c d  /\ g h  /\_      n  /\     _____/\  //\     1   _/\___              _/\_  G  /\_____    _/\ P         _/\_
        e f     i  /\       o p    /\___  v wyxz        /\   _/\_______     /\  /\   H   ___/\  /\ O       ___/\  /\
                  j k             r   _/\              2 3  /\   _____/\_  C D E F      /\_  L M N       _/\_  U V W
                                     /\ u                  4 5  /\_     /\             I  /\            /\  /\
                                    s t                        6  /\_  A B               J K           Q R S T
                                                                 7  /\
                                                                   8 9

##</code><code>##

C:\test>perl \perl64\site\lib\Tree\Dump.pm
                  _____________________________________________________________________________________
    _____________/                                                                                     \___________________
  _/             \_________                                 ___________________________________________/                   \
 / \        _____/         \_____                   _______/                                           \_______________    Z
 a b    ___/     \_____   _/     \            _____/       \_____________________                   ___/               \_
      _/   \_   _/     \ / \_    q          _/     \    ___/                     \___       _______/   \_________      / \
     / \  _/ \ / \_    l m / \_         ___/ \_   _/   /   \___                 _/   \  ___/       \_  /         \_    X Y
     c d / \ g h / \_      n / \    ___/   \ / \ / \   1  _/   \___           _/ \_  G /   \___   _/ \ P      ___/ \_
         e f     i / \       o p   /   \_  v w x y z     / \  _/   \_____    / \ / \   H  _/   \ / \ O      _/   \ / \
                   j k             r  _/ \               2 3 / \  _/     \_  C D E F     / \_  L M N      _/ \_  U V W
                                     / \ u                   4 5 / \_    / \             I / \           / \ / \
                                     s t                         6 / \_  A B               J K           Q R S T
                                                                   7 / \
                                                                     8 9