It seems likely though, with most aligned E-W, that there was some kind of reasoning behind their positioning. Of course it could have just been a vague alignment on the side where the sun and moon both rise as an acknowledgement of that fact without being too specific. Of course, they may all have been aligned on particular lunar or solar episodes, but with so few remaining in anything close to their original state, it is unlikely we'll ever have enough data to make any meaningful judgement.