D12121212121313231311331323112331323223313331333132332313232211331   >>    D1212121212131323131133132311233132322331333133313233231323221133   <<    D12121212121313231311331323112331323223313331333132332313232211333   >>      D12121212121313231311331323112331323223313331333132332313232211332   >>