Help for this page

Select Code to Download

Select or download this

use strict;
use warnings;
...
r { print(@_, "\n"); 1 } [ qw( A B C D   ) ],
                         [ qw( A B C E   ) ],
                         [ qw( A B C F G ) ];

Select or download this
```
ABCD
ABC
...
ACFG
CFG
BCFG
```