D112211231223323131232313232233132322121111331313331313132313231323221111   >>    D11221123122332313123231323223313232212111133131333131313231323132322111   <<    D112211231223323131232313232233132322121111331313331313132313231323221113   >>      D112211231223323131232313232233132322121111331313331313132313231323221112   >>