D121212121213132313113313231123313232233132332121111331323222221   >>    D12121212121313231311331323112331323223313233212111133132322222   <<    D121212121213132313113313231123313232233132332121111331323222223   >>      D121212121213132313113313231123313232233132332121111331323222222   >>