D121212121213132333131232313232233131323223313232233131133133313131232211   >>    D12121212121313233313123231323223313132322331323223313113313331313123221   <<    D121212121213132333131232313232233131323223313232233131133133313131232213   >>      D121212121213132333131232313232233131323223313232233131133133313131232212   >>