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  1. or download this
    my $output='$std | dot |$data| dot '."\n";

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c
d
e
  2. or download this
    a
b
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   c |   3 |   c |   5
   d |   4 |   d |   7
   e |   5 |   e |   9
  3. or download this
    my $output='$std | dot | $r1 |$data| dot | $r2 '."\n";

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c
d
e
  4. or download this
    a
b
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   c |   3 |   3 |   c |   5 |   3
   d |   4 |   4 |   d |   7 |   4
   e |   5 | 5E0 |   e |   9 | 5E0