D12121323331322331313123231313231323223313231333131133132323221   >>    D1212132333132233131312323131323132322331323133313113313232322   <<    D12121323331322331313123231313231323223313231333131133132323223   >>      D12121323331322331313123231313231323223313231333131133132323222   >>