Ok, that's fine, you just want to use 1s and 2s (though it would have been more obvious if you'd just used 0s and 1s :) ). In that case, you don't have as many

Ok, that's fine, you just want to use 1s and 2s (though it would have been more obvious if you'd just used 0s and 1s :) ). In that case, you don't have as many 11s and 22s as 12s and 21s (I'm ignoring the commas since they're irrelevant).