D121212121213132333131232313232233131323223313232233131133132311221   >>    D12121212121313233313123231323223313132322331323223313113313231122   <<    D121212121213132333131232313232233131323223313232233131133132311223   >>      D121212121213132333131232313232233131323223313232233131133132311222   >>