14:12 >perl 1896_SoPW.pl
[
    ARRAY(0x1db5610): 1 2
    ARRAY(0x1d284d8): 2 3
]
[
    ARRAY(0x1d284d8): 2 3
    ARRAY(0x1d28640): 3 4
]
[
    ARRAY(0x1d28640): 3 4
    ARRAY(0x1d28a00): 4 6
]

14:12 >