The arrangement of the rooms in court E is not symmetrical. On the east side court E is curtailed by the small oblong room, 61, and an open court, D. No. 61 is a continuation of the east arm of the corridor 28. It measures 5·25 metres from north to south and 3·50 metres from east to west. The square for the brick groin with which it is roofed is obtained by laying a transverse arch to north and south. It opens by two arched doors, divided by a pier, into court D, which measures 10 metres from north to south and 9·20 metres from east to west. In the south wall there is an arched doorway into the palace yard. To the east of court E there is space for one chamber only (62) and a winding stair which leads to the roof. On the west side there are two chambers, 67 and 68, communicating with one another and with the court. To the south of 67 there is a narrow passage (Plate 37, Fig. 2) which leads into an oblong room, 69, similar in all respects to the oblong rooms behind the lîwân groups in courts B, C, G, and H.[28] Between the barrel vaults of 67 and 68 and the south arm of corridor 28 are the usual tubes. The doorways of 67 and 68 are covered with ovoid arches set back from the jambs, but the opening into the narrow southern passage follows the line of the vault and oversails the wall. Above the vault of the passage there is an inaccessible passage or tube which exists for structural reasons only. To the south of court E lies a lîwân with its side chambers, the lîwân, 64, opening into the court by a wide archway, the side chambers by small doors, as in courts C and G. Finally, the space between 65 and 69 is filled up by a fourth room, 66, which communicates with 65 and with the narrow passage. Tubes are laid between all the barrel vaults of these rooms.[29] The whole building above described is enclosed on three sides by a wall 1·60 metres thick, set with towers 2·40 metres in diameter which project 1·80 metres from the face of the wall (Plate 38, Fig. 1).[30] Through the upper part of the wall runs the low, vaulted, and unlighted gangway which has already been mentioned (Plate 39, Fig. 1). It is no more than a tube between the wall and the vaults that adjoin the wall, but it serves to give access to the round chambers hollowed out of the towers. Access to the roof can be obtained at three points, the stair at the south-east angle of the central court, the stair at the south-east angle of court F, and the stair at the south-east angle of court E. Further, the three doors out of the first floor rooms 99, 102, and 106 open on to the roof of the single-storied block. There are traces of a narrow parapet round the edge of the roof, and the different courts seem to have been divided from one another and from the corridor 28 by low walls on the roof (Plate 38, Fig. 2).