D23112331322331313231323223313121213231323131232313231323221111   >>    D2311233132233131323132322331312121323132313123231323132322111   <<    D23112331322331313231323223313121213231323131232313231323221113   >>      D23112331322331313231323223313121213231323131232313231323221112   >>