D121213233313223313131232313132313232233132313331311331323311211   >>    D12121323331322331313123231313231323223313231333131133132331121   <<    D121213233313223313131232313132313232233132313331311331323311213   >>      D121213233313223313131232313132313232233132313331311331323311212   >>