D1121323223313223313112132313231323123231323223313233313331313231322221   >>    D112132322331322331311213231323132312323132322331323331333131323132222   <<    D1121323223313223313112132313231323123231323223313233313331313231322223   >>      D1121323223313223313112132313231323123231323223313233313331313231322222   >>