I have a list (quite a long one) of checkboxes. Some will be checked by default, and I'd like to put those first. So I'm wondering which direction is more frequent when reading / completing them, to decide whether to arrange the default ones horizontally or vertically (and to see which priority items I put 'first').
Which reading direction is proven to be more frequent? Red or green?:
These are the scenarios I will use in each case: