D12121323331322331311132313132313331323221123313231312323221111   >>    D1212132333132233131113231313231333132322112331323131232322111   <<    D12121323331322331311132313132313331323221123313231312323221113   >>      D12121323331322331311132313132313331323221123313231312323221112   >>