D23112313233313223313132322331323132333212323132313231323221121   >>    D2311231323331322331313232233132313233321232313231323132322112   <<    D23112313233313223313132322331323132333212323132313231323221123   >>      D23112313233313223313132322331323132333212323132313231323221122   >>