Help for this page

Select Code to Download

Select or download this

#!/usr/bin/perl -w
use 5.012;
...
1 1 d
1 2 d
1 2 d

Select or download this

a b c   a b c   a b c   a b c
0 0 d   1 0 d   2 0 d   1 0 d
...
0 2 d   1 1 d           1 1 d
0 2 d   1 2 d           1 2 d
        1 2 d           1 2 d