my @cols = (2, 6, 8, 9, 10, 12, 16, 18, 20);
my @morecols = (2 .. 6, 8, 9, 10, 12, 16, 18, 20, 24, 32, 36, 64);
my @char = (0..9, 'A'..'Z', 'a'..'z');
my @cols = (2, 6, 8, 9, 10, 12, 16, 18, 20);
my @morecols = (2 .. 6, 8, 9, 10, 12, 16, 18, 20, 24, 32, 36, 64);
my @char = (0..9, 'A'..'Z', 'a'..'z');