But it was felt that the spirals all round occupied too much of the field, so the top and bottom were left free for inscribing, and the ornament was limited to the sides, as in this chain of hook pattern of Usertesen I. This design, with the line continued around the top as well as the base, was the staple decoration of the private scarabs of the XIIth-XIIIth dynasties, many of which are of great beauty. Both types are found, but the hook pattern is more usual than the coils.