D2311231323331322331313232233132313123121111331313231323132322321   >>    D231123132333132233131323223313231312312111133131323132313232232   <<    D2311231323331322331313232233132313123121111331313231323132322323   >>      D2311231323331322331313232233132313123121111331313231323132322322   >>