D121212121213132333132323132313231232313232233131133132313231221   >>    D12121212121313233313232313231323123231323223313113313231323122   <<    D121212121213132333132323132313231232313232233131133132313231223   >>      D121212121213132333132323132313231232313232233131133132313231222   >>