The rooms of the upper story are grouped into five baits. Over the entrance an additional chamber is interposed between two baits (compare the courts at Ṭûbah which are common to two baits) and on the opposite side there are two extra rooms to fill up the angles. These two additional rooms communicate with the baits on either side, and the gate-house chamber communicates with either bait; otherwise the baits are kept distinct from one another. The scheme is in fact that of Ṭûbah or Da’djaniyyeh, but with the small courts vaulted over and turned into audience halls or big living-rooms, and here we may seek the explanation of the difference between the baits of the palaces on the eastern side and of those on the western side of the Syrian desert. The normal bait on the Mesopotamian side consists of two lîwân groups with a court between, and the lîwân is derived, as has been shown, from the khilâni. The domestic arrangements of the East, where the women are lodged apart from the men, and if possible the several wives apart from each other, make the bait system in some form indispensable to every dwelling-house, but in Syria the khilâni plan was adopted only for monumental façades, such as that of Solomon’s temple, and from it, through temples of the pagan era, to Christian churches. The normal bait on the Syrian side has therefore no connexion with the khilâni; the lîwân is absent. The group of chambers consists of two pairs of rooms with an intervening court, or in complexes more closely knit together, an intervening hall. The group thus formed is the half of a new unit, and may either share a central court with other half-baits, as at Kharâneh, or be provided with a small court of its own and another half-bait, as at Mshattâ. This distinction apart--it is a distinction which is due to local custom and local architectural tradition--the close relationship which exists between Kharâneh and Ukhaiḍir cannot be insisted upon too strongly, for it helps to determine the date of Ukhaiḍir.