#corrected code from first replies
my @inner1 = (0, 1, 2);
my @inner2 = (1, 4, 7);
my @inner3 = (2, 5, 8);
my @inner4 = (6, 7, 9);

my @array1 = (\@inner1, \@inner2, \@inner3, \@inner4);
my @array2 = (\@inner1, \@inner2, \@inner3, \@inner4);

my %hash = ('array1', \@array1, 'array2', \@array2);