D121212121213132333132323132313231232313232233131133132333132322121   >>    D12121212121313233313232313231323123231323223313113313233313232212   <<    D121212121213132333132323132313231232313232233131133132333132322123   >>      D121212121213132333132323132313231232313232233131133132333132322122   >>