D2311231323331322331313232233132313231313231313331323133313221211   >>    D231123132333132233131323223313231323131323131333132313331322121   <<    D2311231323331322331313232233132313231313231313331323133313221213   >>      D2311231323331322331313232233132313231313231313331323133313221212   >>