D1121323223313223313112132313231323132312323223313233313123232221   >>    D112132322331322331311213231323132313231232322331323331312323222   <<    D1121323223313223313112132313231323132312323223313233313123232223   >>      D1121323223313223313112132313231323132312323223313233313123232222   >>