D1121323223313223313112132313231323123231323223313233313331323123232311   >>    D112132322331322331311213231323132312323132322331323331333132312323231   <<    D1121323223313223313112132313231323123231323223313233313331323123232313   >>      D1121323223313223313112132313231323123231323223313233313331323123232312   >>