D121212121213132333131232313232233131323223313232233131111222221   >>    D12121212121313233313123231323223313132322331323223313111122222   <<    D121212121213132333131232313232233131323223313232233131111222223   >>      D121212121213132333131232313232233131323223313232233131111222222   >>