D12121323331313223313233313131323133313233313132333132313232311   >>    D1212132333131322331323331313132313331323331313233313231323231   <<    D12121323331313223313233313131323133313233313132333132313232313   >>      D12121323331313223313233313131323133313233313132333132313232312   >>