D121212121213132333131232313232233131323223313233231333132312323311   >>    D12121212121313233313123231323223313132322331323323133313231232331   <<    D121212121213132333131232313232233131323223313233231333132312323313   >>      D121212121213132333131232313232233131323223313233231333132312323312   >>