D23112313233313223313132322331323132313232211331323331323133313121   >>    D2311231323331322331313232233132313231323221133132333132313331312   <<    D23112313233313223313132322331323132313232211331323331323133313123   >>      D23112313233313223313132322331323132313232211331323331323133313122   >>